diff --git a/packages/orchestration-service/src/services/summarization.js b/packages/orchestration-service/src/services/summarization.js
index 186200e..54a1118 100644
--- a/packages/orchestration-service/src/services/summarization.js
+++ b/packages/orchestration-service/src/services/summarization.js
@@ -14,13 +14,13 @@ function buildSummaryPrompt(episodes, existingSummary = null) {
         .join('\n\n');
 
     const instruction = existingSummary
-        ? `You have a previous summary of this conversation. Update it to include the new exchanges below. Keep it concise — plain prose, no markdown, no headers, third person, max 200 words.
+    ? `Update this summary to include the new conversation exchanges below. Output only the updated summary — do not continue the conversation.
 
 Previous summary:
 ${existingSummary}
 
 New exchanges to incorporate:`
-        : `Summarise this conversation. Be concise — plain prose, no markdown, no headers, third person, max 200 words. Preserve key decisions, facts, named entities, and unresolved questions.
+    : `Summarise this conversation. Output only the summary — do not continue the conversation or give recommendations.
 
 Conversation:`;
 
@@ -88,8 +88,12 @@ async function maybeSummarize(session, allEpisodes) {
     const totalEpisodeTokens = allEpisodes.reduce((sum, ep) => sum + (ep.token_count || 0), 0);
 
     // 5. Generate summary — pass existing content if updating
+    const episodesToSummarize = latest 
+    ? allEpisodes.filter(ep => ep.id > lastCoveredId)
+    : allEpisodes;
+
     const content = await generateSummary(
-        allEpisodes,
+        episodesToSummarize,
         latest && latest.content.length < MAX_SUMMARY_TOKENS ? latest.content : null
         // if existing summary is already large, treat as fresh rather than appending to a huge blob
     );