diff --git a/ghostcrew/agents/crew/orchestrator.py b/ghostcrew/agents/crew/orchestrator.py
index c68ae24..723b86e 100644
--- a/ghostcrew/agents/crew/orchestrator.py
+++ b/ghostcrew/agents/crew/orchestrator.py
@@ -9,6 +9,7 @@ from ..prompts import ghost_crew
 from .models import CrewState, WorkerCallback
 from .tools import create_crew_tools
 from .worker_pool import WorkerPool
+from ...knowledge.graph import ShadowGraph
 
 if TYPE_CHECKING:
     from ...llm import LLM
@@ -39,6 +40,7 @@ class CrewOrchestrator:
 
         self.state = CrewState.IDLE
         self.pool: Optional[WorkerPool] = None
+        self.graph = ShadowGraph()
         self._messages: List[Dict[str, Any]] = []
 
     def _get_system_prompt(self) -> str:
@@ -53,9 +55,68 @@ class CrewOrchestrator:
             "\n".join(tool_lines) if tool_lines else "No tools available"
         )
 
+        # Get saved notes if available
+        notes_context = ""
+        graph_insights = []
+        try:
+            from ...tools.notes import get_all_notes_sync
+
+            notes = get_all_notes_sync()
+            if notes:
+                # Update shadow graph
+                self.graph.update_from_notes(notes)
+                graph_insights = self.graph.get_strategic_insights()
+
+                # Group by category
+                grouped = {}
+                for key, data in notes.items():
+                    # Handle legacy string format just in case
+                    if isinstance(data, str):
+                        cat = "info"
+                        content = data
+                    else:
+                        cat = data.get("category", "info")
+                        content = data.get("content", "")
+                    
+                    # Truncate long notes in system prompt to save tokens
+                    if len(content) > 200:
+                        content = content[:197] + "..."
+
+                    if cat not in grouped:
+                        grouped[cat] = []
+                    grouped[cat].append(f"- {key}: {content}")
+                
+                # Format output with specific order
+                sections = []
+                order = ["credential", "vulnerability", "finding", "artifact", "task", "info"]
+                
+                for cat in order:
+                    if cat in grouped:
+                        header = cat.title() + "s"
+                        if cat == "info":
+                            header = "General Information"
+                        sections.append(f"## {header}")
+                        sections.append("\n".join(grouped[cat]))
+                
+                # Add any remaining categories
+                for cat in sorted(grouped.keys()):
+                    if cat not in order:
+                        sections.append(f"## {cat.title()}")
+                        sections.append("\n".join(grouped[cat]))
+                        
+                notes_context = "\n\n".join(sections)
+        except Exception:
+            pass  # Notes not available
+
+        # Format insights for prompt
+        insights_text = ""
+        if graph_insights:
+            insights_text = "\n\n## Strategic Insights (Graph Analysis)\n" + "\n".join(f"- {i}" for i in graph_insights)
+
         return ghost_crew.render(
             target=self.target or "Not specified",
             prior_context=self.prior_context or "None - starting fresh",
+            notes_context=notes_context + insights_text,
             worker_tools=worker_tools_formatted,
             environment={
                 "os": platform.system(),
diff --git a/ghostcrew/agents/prompts/ghost_crew.jinja b/ghostcrew/agents/prompts/ghost_crew.jinja
index 512a65c..c7e564e 100644
--- a/ghostcrew/agents/prompts/ghost_crew.jinja
+++ b/ghostcrew/agents/prompts/ghost_crew.jinja
@@ -21,6 +21,12 @@ This is an authorized penetration testing engagement. All targets are in scope.
 {{ prior_context }}
 {% endif %}
 
+{% if notes_context %}
+## Saved Notes (Shared Knowledge)
+(Notes may be truncated. Use `notes(action='read', key='...')` to see full content if needed.)
+{{ notes_context }}
+{% endif %}
+
 ## Your Capabilities
 You manage agents using these tools:
 - **spawn_agent**: Deploy an agent with a specific task. Be explicit about which tools to use.
diff --git a/ghostcrew/knowledge/graph.py b/ghostcrew/knowledge/graph.py
new file mode 100644
index 0000000..1c667f2
--- /dev/null
+++ b/ghostcrew/knowledge/graph.py
@@ -0,0 +1,189 @@
+"""
+Shadow Graph implementation for GhostCrew.
+
+This module provides a lightweight knowledge graph that is built automatically
+from agent notes. It is used by the Orchestrator to compute strategic insights
+(e.g., "we have creds for X but haven't scanned it") without burdening the
+agents with graph management.
+
+Architecture:
+    Notes (Source of Truth) -> Shadow Graph (Derived View) -> Insights (Strategic Hints)
+"""
+
+import logging
+import re
+from dataclasses import dataclass, field
+from typing import Any, Dict, List, Optional, Set, Tuple
+
+import networkx as nx
+
+logger = logging.getLogger(__name__)
+
+
+@dataclass
+class GraphNode:
+    """A node in the shadow graph."""
+    id: str
+    type: str  # host, service, credential, finding, artifact
+    label: str
+    metadata: Dict[str, Any] = field(default_factory=dict)
+
+    def __hash__(self):
+        return hash(self.id)
+
+
+@dataclass
+class GraphEdge:
+    """An edge in the shadow graph."""
+    source: str
+    target: str
+    type: str  # CONNECTS_TO, HAS_SERVICE, AUTH_ACCESS, RELATED_TO
+    metadata: Dict[str, Any] = field(default_factory=dict)
+
+
+class ShadowGraph:
+    """
+    A NetworkX-backed knowledge graph that derives its state from notes.
+    """
+
+    def __init__(self):
+        self.graph = nx.DiGraph()
+        self._processed_notes: Set[str] = set()
+        
+        # Regex patterns for entity extraction
+        self._ip_pattern = re.compile(r'\b(?:\d{1,3}\.){3}\d{1,3}\b')
+        self._port_pattern = re.compile(r'(\d{1,5})/(tcp|udp)')
+        self._user_pattern = re.compile(r'user[:\s]+([a-zA-Z0-9_.-]+)', re.IGNORECASE)
+
+    def update_from_notes(self, notes: Dict[str, Dict[str, Any]]) -> None:
+        """
+        Update the graph based on new notes.
+        
+        This method is idempotent and incremental. It only processes notes
+        that haven't been seen before (based on key).
+        """
+        for key, note_data in notes.items():
+            if key in self._processed_notes:
+                continue
+
+            # Handle legacy format
+            if isinstance(note_data, str):
+                content = note_data
+                category = "info"
+            else:
+                content = note_data.get("content", "")
+                category = note_data.get("category", "info")
+
+            self._process_note(key, content, category)
+            self._processed_notes.add(key)
+
+    def _process_note(self, key: str, content: str, category: str) -> None:
+        """Extract entities and relationships from a single note."""
+        
+        # 1. Extract IPs (Hosts)
+        ips = self._ip_pattern.findall(content)
+        hosts = []
+        for ip in ips:
+            node_id = f"host:{ip}"
+            self._add_node(node_id, "host", ip)
+            hosts.append(node_id)
+
+        # 2. Handle specific categories
+        if category == "credential":
+            self._process_credential(key, content, hosts)
+        elif category == "finding":
+            self._process_finding(key, content, hosts)
+        elif category == "vulnerability":
+            self._process_vulnerability(key, content, hosts)
+
+        # 3. Link note to hosts (provenance)
+        # We don't add the note itself as a node usually, but we could.
+        # For now, we just use the note to build Host-to-Host or Host-to-Service links.
+
+    def _add_node(self, node_id: str, node_type: str, label: str, **kwargs) -> None:
+        """Add a node if it doesn't exist."""
+        if not self.graph.has_node(node_id):
+            self.graph.add_node(node_id, type=node_type, label=label, **kwargs)
+
+    def _add_edge(self, source: str, target: str, edge_type: str, **kwargs) -> None:
+        """Add an edge."""
+        if self.graph.has_node(source) and self.graph.has_node(target):
+            self.graph.add_edge(source, target, type=edge_type, **kwargs)
+
+    def _process_credential(self, key: str, content: str, related_hosts: List[str]) -> None:
+        """Process a credential note."""
+        # Extract username
+        user_match = self._user_pattern.search(content)
+        username = user_match.group(1) if user_match else "unknown"
+        
+        cred_id = f"cred:{key}"
+        self._add_node(cred_id, "credential", f"Creds ({username})")
+
+        # Link cred to hosts it belongs to (or works on)
+        for host_id in related_hosts:
+            # If the note says "ssh", assume SSH access
+            protocol = "ssh" if "ssh" in content.lower() else "unknown"
+            self._add_edge(cred_id, host_id, "AUTH_ACCESS", protocol=protocol)
+
+    def _process_finding(self, key: str, content: str, related_hosts: List[str]) -> None:
+        """Process a finding note (e.g., open ports)."""
+        # Extract ports
+        ports = self._port_pattern.findall(content)
+        for port, proto in ports:
+            for host_id in related_hosts:
+                service_id = f"service:{host_id}:{port}"
+                self._add_node(service_id, "service", f"{port}/{proto}")
+                self._add_edge(host_id, service_id, "HAS_SERVICE", protocol=proto)
+
+    def _process_vulnerability(self, key: str, content: str, related_hosts: List[str]) -> None:
+        """Process a vulnerability note."""
+        vuln_id = f"vuln:{key}"
+        # Try to extract CVE
+        cve_match = re.search(r'CVE-\d{4}-\d{4,7}', content, re.IGNORECASE)
+        label = cve_match.group(0) if cve_match else "Vulnerability"
+        
+        self._add_node(vuln_id, "vulnerability", label)
+        
+        for host_id in related_hosts:
+            self._add_edge(host_id, vuln_id, "AFFECTED_BY")
+
+    def get_strategic_insights(self) -> List[str]:
+        """
+        Analyze the graph and return natural language insights for the Orchestrator.
+        """
+        insights = []
+        
+        # Insight 1: Unused Credentials
+        # Find credentials that have AUTH_ACCESS to a host, but we haven't "explored" that host fully?
+        # Or simply list valid access paths.
+        for node, data in self.graph.nodes(data=True):
+            if data.get("type") == "credential":
+                # Find what it connects to
+                targets = [v for u, v in self.graph.out_edges(node)]
+                if targets:
+                    target_labels = [self.graph.nodes[t].get("label", t) for t in targets]
+                    insights.append(f"We have credentials that provide access to: {', '.join(target_labels)}")
+
+        # Insight 2: High Value Targets (Hosts with many open ports/vulns)
+        for node, data in self.graph.nodes(data=True):
+            if data.get("type") == "host":
+                # Count services
+                services = [v for u, v in self.graph.out_edges(node) if self.graph.nodes[v].get("type") == "service"]
+                vulns = [v for u, v in self.graph.out_edges(node) if self.graph.nodes[v].get("type") == "vulnerability"]
+                
+                if len(services) > 0 or len(vulns) > 0:
+                    insights.append(f"Host {data['label']} has {len(services)} services and {len(vulns)} known vulnerabilities.")
+
+        # Insight 3: Potential Pivots (Host A -> Cred -> Host B)
+        # This is harder without explicit "source" of creds, but we can infer.
+        
+        return insights
+
+    def export_summary(self) -> str:
+        """Export a text summary of the graph state."""
+        stats = {
+            "hosts": len([n for n, d in self.graph.nodes(data=True) if d['type'] == 'host']),
+            "creds": len([n for n, d in self.graph.nodes(data=True) if d['type'] == 'credential']),
+            "vulns": len([n for n, d in self.graph.nodes(data=True) if d['type'] == 'vulnerability']),
+        }
+        return f"Graph State: {stats['hosts']} Hosts, {stats['creds']} Credentials, {stats['vulns']} Vulnerabilities"
diff --git a/requirements.txt b/requirements.txt
index 310590a..7c1a6fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,10 @@ httpx>=0.27.0
 # RAG / Embeddings
 numpy>=1.26.0
 sentence-transformers>=2.7.0
+
+# Graph
+networkx>=3.3
+
 faiss-cpu>=1.8.0
 
 # Docker