diff --git a/Cargo.lock b/Cargo.lock
index 423f190f8..835dae15e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4863,6 +4863,7 @@ dependencies = [
  "rayon",
  "regex",
  "reqwest 0.12.9",
+ "roaring",
  "rustc-hash 2.0.0",
  "serde",
  "serde_json",
@@ -5259,6 +5260,16 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "roaring"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f4b84ba6e838ceb47b41de5194a60244fac43d9fe03b71dbe8c5a201081d6d1"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+]
+
 [[package]]
 name = "ron"
 version = "0.8.1"
diff --git a/Cargo.toml b/Cargo.toml
index c1d02e52e..014018e2a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -62,6 +62,7 @@ numpy = "0.22.1"
 itertools = "0.13.0"
 rand = "0.8.5"
 rayon = "1.8.1"
+roaring = "0.10.6"
 sorted_vector_map = "0.2.0"
 tokio = { version = "1.36.0", features = ["full"] }
 once_cell = "1.19.0"
diff --git a/pometry-storage-private b/pometry-storage-private
index 5c57e030b..4312243c3 160000
--- a/pometry-storage-private
+++ b/pometry-storage-private
@@ -1 +1 @@
-Subproject commit 5c57e030bd9eedc2f645aad38fb8243bffd1d990
+Subproject commit 4312243c364254798c673c3681e8a5425204fd8e
diff --git a/raphtory/Cargo.toml b/raphtory/Cargo.toml
index 246d42176..50655e6aa 100644
--- a/raphtory/Cargo.toml
+++ b/raphtory/Cargo.toml
@@ -77,6 +77,7 @@ pometry-storage = { workspace = true, optional = true }
 
 prost = { workspace = true, optional = true }
 prost-types = { workspace = true, optional = true }
+roaring ={ workspace = true }
 
 [dev-dependencies]
 csv = { workspace = true }
diff --git a/raphtory/src/db/api/storage/graph/edges/edge_entry.rs b/raphtory/src/db/api/storage/graph/edges/edge_entry.rs
index e239952b1..db9467701 100644
--- a/raphtory/src/db/api/storage/graph/edges/edge_entry.rs
+++ b/raphtory/src/db/api/storage/graph/edges/edge_entry.rs
@@ -13,6 +13,7 @@ use crate::{
         tprop_storage_ops::TPropOps,
     },
 };
+use raphtory_api::core::entities::EID;
 use rayon::prelude::*;
 use std::ops::Range;
 
@@ -60,6 +61,10 @@ impl<'a, 'b: 'a> EdgeStorageOps<'a> for &'a EdgeStorageEntry<'b> {
         self.as_ref().dst()
     }
 
+    fn eid(self) -> EID {
+        self.as_ref().eid()
+    }
+
     fn layer_ids_iter(self, layer_ids: &LayerIds) -> impl Iterator<Item = usize> + 'a {
         self.as_ref().layer_ids_iter(layer_ids)
     }
diff --git a/raphtory/src/db/api/storage/graph/edges/edge_ref.rs b/raphtory/src/db/api/storage/graph/edges/edge_ref.rs
index b3b227a8c..6323a6dc4 100644
--- a/raphtory/src/db/api/storage/graph/edges/edge_ref.rs
+++ b/raphtory/src/db/api/storage/graph/edges/edge_ref.rs
@@ -9,6 +9,7 @@ use crate::{
         tprop_storage_ops::TPropOps,
     },
 };
+use raphtory_api::core::entities::EID;
 use rayon::prelude::*;
 use std::ops::Range;
 
@@ -74,6 +75,10 @@ impl<'a> EdgeStorageOps<'a> for EdgeStorageRef<'a> {
         for_all!(self, edge => edge.dst())
     }
 
+    fn eid(self) -> EID {
+        for_all!(self, edge => edge.eid())
+    }
+
     fn layer_ids_iter(self, layer_ids: &LayerIds) -> impl Iterator<Item = usize> + 'a {
         for_all_iter!(self, edge => EdgeStorageOps::layer_ids_iter(edge, layer_ids))
     }
diff --git a/raphtory/src/db/api/storage/graph/edges/edge_storage_ops.rs b/raphtory/src/db/api/storage/graph/edges/edge_storage_ops.rs
index 51d4f8bde..f1f87a83a 100644
--- a/raphtory/src/db/api/storage/graph/edges/edge_storage_ops.rs
+++ b/raphtory/src/db/api/storage/graph/edges/edge_storage_ops.rs
@@ -150,6 +150,7 @@ pub trait EdgeStorageOps<'a>: Copy + Sized + Send + Sync + 'a {
     fn has_layer(self, layer_ids: &LayerIds) -> bool;
     fn src(self) -> VID;
     fn dst(self) -> VID;
+    fn eid(self) -> EID;
 
     fn layer_ids_iter(self, layer_ids: &LayerIds) -> impl Iterator<Item = usize> + 'a;
 
@@ -325,6 +326,10 @@ impl<'a> EdgeStorageOps<'a> for MemEdge<'a> {
         self.edge_store().dst
     }
 
+    fn eid(self) -> EID {
+        self.eid()
+    }
+
     fn out_ref(self) -> EdgeRef {
         EdgeRef::new_outgoing(self.eid(), self.src(), self.dst())
     }
diff --git a/raphtory/src/db/api/view/graph.rs b/raphtory/src/db/api/view/graph.rs
index 65dbc2d75..80e0dbc18 100644
--- a/raphtory/src/db/api/view/graph.rs
+++ b/raphtory/src/db/api/view/graph.rs
@@ -22,7 +22,8 @@ use crate::{
             node::NodeView,
             nodes::Nodes,
             views::{
-                node_subgraph::NodeSubgraph, node_type_filtered_subgraph::TypeFilteredSubgraph,
+                masked_graph::MaskedGraph, node_subgraph::NodeSubgraph,
+                node_type_filtered_subgraph::TypeFilteredSubgraph,
             },
         },
     },
@@ -66,6 +67,8 @@ pub trait GraphViewOps<'graph>: BoxableGraphView + Sized + Clone + 'graph {
 
     fn subgraph<I: IntoIterator<Item = V>, V: AsNodeRef>(&self, nodes: I) -> NodeSubgraph<Self>;
 
+    fn masked(&self) -> MaskedGraph<Self>;
+
     fn subgraph_node_types<I: IntoIterator<Item = V>, V: Borrow<str>>(
         &self,
         nodes_types: I,
@@ -345,6 +348,10 @@ impl<'graph, G: BoxableGraphView + Sized + Clone + 'graph> GraphViewOps<'graph>
         NodeSubgraph::new(self.clone(), nodes)
     }
 
+    fn masked(&self) -> MaskedGraph<G> {
+        MaskedGraph::new(self.clone())
+    }
+
     fn subgraph_node_types<I: IntoIterator<Item = V>, V: Borrow<str>>(
         &self,
         nodes_types: I,
diff --git a/raphtory/src/db/graph/views/masked_graph.rs b/raphtory/src/db/graph/views/masked_graph.rs
new file mode 100644
index 000000000..9d072b3a5
--- /dev/null
+++ b/raphtory/src/db/graph/views/masked_graph.rs
@@ -0,0 +1,211 @@
+use crate::{
+    core::entities::LayerIds,
+    db::api::{
+        properties::internal::InheritPropertiesOps,
+        storage::graph::{
+            edges::{edge_ref::EdgeStorageRef, edge_storage_ops::EdgeStorageOps},
+            nodes::{node_ref::NodeStorageRef, node_storage_ops::NodeStorageOps},
+        },
+        view::internal::{
+            Base, EdgeFilterOps, Immutable, InheritCoreOps, InheritLayerOps, InheritListOps,
+            InheritMaterialize, InheritTimeSemantics, NodeFilterOps, Static,
+        },
+    },
+    prelude::{GraphViewOps, LayerOps},
+};
+use roaring::RoaringTreemap;
+use std::{
+    fmt::{Debug, Formatter},
+    sync::Arc,
+};
+
+#[derive(Clone)]
+pub struct MaskedGraph<G> {
+    pub(crate) graph: G,
+    pub(crate) layered_mask: Arc<[(RoaringTreemap, RoaringTreemap)]>,
+}
+
+impl<G> Static for MaskedGraph<G> {}
+
+impl<'graph, G: Debug + 'graph> Debug for MaskedGraph<G> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("MaskedGraph")
+            .field("graph", &self.graph as &dyn Debug)
+            .finish()
+    }
+}
+
+impl<'graph, G: GraphViewOps<'graph>> Base for MaskedGraph<G> {
+    type Base = G;
+    #[inline(always)]
+    fn base(&self) -> &Self::Base {
+        &self.graph
+    }
+}
+
+impl<'graph, G: GraphViewOps<'graph>> Immutable for MaskedGraph<G> {}
+
+impl<'graph, G: GraphViewOps<'graph>> InheritCoreOps for MaskedGraph<G> {}
+impl<'graph, G: GraphViewOps<'graph>> InheritTimeSemantics for MaskedGraph<G> {}
+impl<'graph, G: GraphViewOps<'graph>> InheritPropertiesOps for MaskedGraph<G> {}
+impl<'graph, G: GraphViewOps<'graph>> InheritMaterialize for MaskedGraph<G> {}
+impl<'graph, G: GraphViewOps<'graph>> InheritLayerOps for MaskedGraph<G> {}
+
+impl<'graph, G: GraphViewOps<'graph>> MaskedGraph<G> {
+    pub fn new(graph: G) -> Self {
+        let mut layered_masks = vec![];
+        for l_name in graph.unique_layers() {
+            let l_id = graph.get_layer_id(&l_name).unwrap();
+            let layer_g = graph.layers(l_name).unwrap();
+            let nodes = layer_g.nodes();
+            let edges = layer_g.edges();
+
+            let nodes: RoaringTreemap = nodes.into_iter().map(|id| id.node.as_u64()).collect();
+            let edges: RoaringTreemap =
+                edges.into_iter().map(|id| id.edge.pid().as_u64()).collect();
+
+            if layered_masks.len() < l_id + 1 {
+                layered_masks.resize(l_id + 1, (RoaringTreemap::new(), RoaringTreemap::new()));
+            }
+
+            layered_masks[l_id] = (nodes, edges);
+        }
+
+        Self {
+            graph,
+            layered_mask: layered_masks.into(),
+        }
+    }
+}
+
+// FIXME: this should use the list version ideally
+impl<'graph, G: GraphViewOps<'graph>> InheritListOps for MaskedGraph<G> {}
+impl<'graph, G: GraphViewOps<'graph>> EdgeFilterOps for MaskedGraph<G> {
+    #[inline]
+    fn edges_filtered(&self) -> bool {
+        true
+    }
+
+    #[inline]
+    fn edge_list_trusted(&self) -> bool {
+        false
+    }
+
+    #[inline]
+    fn edge_filter_includes_node_filter(&self) -> bool {
+        self.graph.edge_filter_includes_node_filter()
+    }
+
+    #[inline]
+    fn filter_edge(&self, edge: EdgeStorageRef, layer_ids: &LayerIds) -> bool {
+        let filter_fn = |(nodes, edges): &(RoaringTreemap, RoaringTreemap)| {
+            edges.contains(edge.eid().as_u64())
+                && nodes.contains(edge.src().as_u64())
+                && nodes.contains(edge.dst().as_u64())
+        };
+        match layer_ids {
+            LayerIds::None => false,
+            LayerIds::All => self.layered_mask.iter().any(filter_fn),
+            LayerIds::One(id) => self.layered_mask.get(*id).map(filter_fn).unwrap_or(false),
+            LayerIds::Multiple(multiple) => multiple
+                .iter()
+                .any(|id| self.layered_mask.get(id).map(filter_fn).unwrap_or(false)),
+        }
+    }
+}
+
+impl<'graph, G: GraphViewOps<'graph>> NodeFilterOps for MaskedGraph<G> {
+    fn nodes_filtered(&self) -> bool {
+        true
+    }
+    // FIXME: should use list version and make this true
+    fn node_list_trusted(&self) -> bool {
+        false
+    }
+
+    #[inline]
+    fn filter_node(&self, node: NodeStorageRef, layer_ids: &LayerIds) -> bool {
+        match layer_ids {
+            LayerIds::None => false,
+            LayerIds::All => self
+                .layered_mask
+                .iter()
+                .any(|(nodes, _)| nodes.contains(node.vid().as_u64())),
+            LayerIds::One(id) => self
+                .layered_mask
+                .get(*id)
+                .map(|(nodes, _)| nodes.contains(node.vid().as_u64()))
+                .unwrap_or(false),
+            LayerIds::Multiple(multiple) => multiple.iter().any(|id| {
+                self.layered_mask
+                    .get(id)
+                    .map(|(nodes, _)| nodes.contains(node.vid().as_u64()))
+                    .unwrap_or(false)
+            }),
+        }
+    }
+}
+
+#[cfg(test)]
+mod masked_graph_tests {
+    use crate::{
+        algorithms::motifs::triangle_count::triangle_count, db::graph::graph::assert_graph_equal,
+        prelude::*, test_storage,
+    };
+    use itertools::Itertools;
+
+    #[test]
+    fn test_materialize_no_edges() {
+        let graph = Graph::new();
+
+        graph.add_node(1, 1, NO_PROPS, None).unwrap();
+        graph.add_node(2, 2, NO_PROPS, None).unwrap();
+
+        test_storage!(&graph, |graph| {
+            let sg = graph.masked();
+
+            let actual = sg.materialize().unwrap().into_events().unwrap();
+            assert_graph_equal(&actual, &sg);
+        });
+    }
+
+    #[test]
+    fn test_mask_the_window_50pc() {
+        let graph = Graph::new();
+        let edges = vec![
+            (1, 2, 1),
+            (1, 3, 2),
+            (1, 4, 3),
+            (3, 1, 4),
+            (3, 4, 5),
+            (3, 5, 6),
+            (4, 5, 7),
+            (5, 6, 8),
+            (5, 8, 9),
+            (7, 5, 10),
+            (8, 5, 11),
+            (1, 9, 12),
+            (9, 1, 13),
+            (6, 3, 14),
+            (4, 8, 15),
+            (8, 3, 16),
+            (5, 10, 17),
+            (10, 5, 18),
+            (10, 8, 19),
+            (1, 11, 20),
+            (11, 1, 21),
+            (9, 11, 22),
+            (11, 9, 23),
+        ];
+        for (src, dst, ts) in edges {
+            graph.add_edge(ts, src, dst, NO_PROPS, None).unwrap();
+        }
+        test_storage!(&graph, |graph| {
+            let window = graph.window(12, 24);
+            let mask = window.masked();
+            let ts = triangle_count(&mask, None);
+            let tg = triangle_count(&window, None);
+            assert_eq!(ts, tg)
+        });
+    }
+}
diff --git a/raphtory/src/db/graph/views/mod.rs b/raphtory/src/db/graph/views/mod.rs
index 9ae9eb378..cea08f8d8 100644
--- a/raphtory/src/db/graph/views/mod.rs
+++ b/raphtory/src/db/graph/views/mod.rs
@@ -1,5 +1,6 @@
 pub mod deletion_graph;
 pub mod layer_graph;
+pub mod masked_graph;
 pub mod node_subgraph;
 pub mod node_type_filtered_subgraph;
 pub mod property_filter;
diff --git a/raphtory/src/disk_graph/graph_impl/edge_storage_ops.rs b/raphtory/src/disk_graph/graph_impl/edge_storage_ops.rs
index f0c124ae7..277446185 100644
--- a/raphtory/src/disk_graph/graph_impl/edge_storage_ops.rs
+++ b/raphtory/src/disk_graph/graph_impl/edge_storage_ops.rs
@@ -11,7 +11,10 @@ use crate::{
     },
 };
 use pometry_storage::{edge::Edge, tprops::DiskTProp};
-use raphtory_api::core::{entities::edges::edge_ref::EdgeRef, storage::timeindex::TimeIndexEntry};
+use raphtory_api::core::{
+    entities::{edges::edge_ref::EdgeRef, EID},
+    storage::timeindex::TimeIndexEntry,
+};
 use rayon::prelude::*;
 use std::{iter, ops::Range};
 
@@ -48,6 +51,10 @@ impl<'a> EdgeStorageOps<'a> for Edge<'a> {
         self.dst_id()
     }
 
+    fn eid(self) -> EID {
+        self.pid()
+    }
+
     fn out_ref(self) -> EdgeRef {
         EdgeRef::new_outgoing(self.eid(), self.src_id(), self.dst_id())
     }
diff --git a/raphtory/src/disk_graph/graph_impl/mod.rs b/raphtory/src/disk_graph/graph_impl/mod.rs
index 5444b9967..08222302a 100644
--- a/raphtory/src/disk_graph/graph_impl/mod.rs
+++ b/raphtory/src/disk_graph/graph_impl/mod.rs
@@ -35,17 +35,13 @@ mod test {
 
     use itertools::Itertools;
     use proptest::{prelude::*, sample::size_range};
-    use raphtory_api::core::{entities::VID, storage::timeindex::TimeIndexOps};
     use rayon::prelude::*;
     use tempfile::TempDir;
 
     use pometry_storage::{graph::TemporalGraph, properties::Properties};
 
     use crate::{
-        db::api::{
-            storage::graph::{nodes::node_storage_ops::NodeStorageOps, storage_ops::GraphStorage},
-            view::{internal::CoreGraphOps, StaticGraphViewOps},
-        },
+        db::api::{storage::graph::storage_ops::GraphStorage, view::StaticGraphViewOps},
         disk_graph::Time,
         prelude::*,
     };
diff --git a/raphtory/src/disk_graph/storage_interface/node.rs b/raphtory/src/disk_graph/storage_interface/node.rs
index 1dd6bb59f..d35812cea 100644
--- a/raphtory/src/disk_graph/storage_interface/node.rs
+++ b/raphtory/src/disk_graph/storage_interface/node.rs
@@ -268,7 +268,7 @@ impl<'a> NodeStorageOps<'a> for DiskNode<'a> {
             LayerIds::All => self
                 .graph
                 .find_edge(self.vid, dst)
-                .map(|e| EdgeRef::new_outgoing(e.eid(), self.vid, dst)),
+                .map(|e| EdgeRef::new_outgoing(e.pid(), self.vid, dst)),
             LayerIds::One(id) => {
                 let eid = self.graph.layers()[*id]
                     .nodes_storage()
diff --git a/raphtory/src/python/graph/views/graph_view.rs b/raphtory/src/python/graph/views/graph_view.rs
index 47096dd30..8909b762b 100644
--- a/raphtory/src/python/graph/views/graph_view.rs
+++ b/raphtory/src/python/graph/views/graph_view.rs
@@ -18,6 +18,7 @@ use crate::{
             nodes::Nodes,
             views::{
                 layer_graph::LayeredGraph,
+                masked_graph::MaskedGraph,
                 node_subgraph::NodeSubgraph,
                 node_type_filtered_subgraph::TypeFilteredSubgraph,
                 property_filter::{
@@ -106,6 +107,12 @@ impl<G: StaticGraphViewOps + IntoDynamic> IntoPy<PyObject> for NodeSubgraph<G> {
     }
 }
 
+impl<G: StaticGraphViewOps + IntoDynamic> IntoPy<PyObject> for MaskedGraph<G> {
+    fn into_py(self, py: Python<'_>) -> PyObject {
+        PyGraphView::from(self).into_py(py)
+    }
+}
+
 impl<G: StaticGraphViewOps + IntoDynamic> IntoPy<PyObject> for TypeFilteredSubgraph<G> {
     fn into_py(self, py: Python<'_>) -> PyObject {
         PyGraphView::from(self).into_py(py)
@@ -349,6 +356,16 @@ impl PyGraphView {
         self.graph.subgraph(nodes)
     }
 
+    /// Applies the filters to the graph and retains the node ids and the edge ids
+    /// in the graph that satisfy the filters
+    /// creates bitsets per layer for nodes and edges
+    ///
+    /// Returns:
+    ///   MaskedGraph: Returns the masked graph
+    fn masked_graph(&self) -> MaskedGraph<DynamicGraph> {
+        self.graph.masked()
+    }
+
     /// Returns a subgraph filtered by node types given a set of node types
     ///
     /// Arguments: