diff --git a/src/lib/navigator/EventNetwork/NodeTooltip.svelte b/src/lib/navigator/EventNetwork/NodeTooltip.svelte
index 0c40287..d785c53 100644
--- a/src/lib/navigator/EventNetwork/NodeTooltip.svelte
+++ b/src/lib/navigator/EventNetwork/NodeTooltip.svelte
@@ -1,6 +1,6 @@
 <script lang="ts">
   import type { NetworkNode } from "./types";
-  import { onMount } from "svelte";
+  import { onMount, createEventDispatcher } from "svelte";
   
   let { node, selected = false, x, y } = $props<{
     node: NetworkNode;
@@ -9,6 +9,8 @@
     y: number;
   }>();
   
+  const dispatch = createEventDispatcher();
+  
   let tooltipElement: HTMLDivElement;
   let tooltipX = $state(x + 10);
   let tooltipY = $state(y - 10);
@@ -23,6 +25,16 @@
     return "Unknown";
   }
   
+  function getSummaryTag(node: NetworkNode): string | null {
+    if (node.event) {
+      const summaryTags = node.event.getMatchingTags("summary");
+      if (summaryTags.length > 0) {
+        return summaryTags[0][1];
+      }
+    }
+    return null;
+  }
+  
   function getDTag(node: NetworkNode): string {
     if (node.event) {
       const dTags = node.event.getMatchingTags("d");
@@ -38,6 +50,10 @@
     return content.substring(0, maxLength) + "...";
   }
   
+  function closeTooltip() {
+    dispatch('close');
+  }
+  
   // Ensure tooltip is fully visible on screen
   onMount(() => {
     if (tooltipElement) {
@@ -72,9 +88,18 @@
   bind:this={tooltipElement}
   class="tooltip-leather fixed p-4 rounded shadow-lg bg-primary-0 dark:bg-primary-800
          border border-gray-200 dark:border-gray-800 transition-colors duration-200"
-  style="left: {tooltipX}px; top: {tooltipY}px; z-index: 1000;"
+  style="left: {tooltipX}px; top: {tooltipY}px; z-index: 1000; max-width: 400px;"
 >
-  <div class="space-y-2">
+  <button 
+    class="absolute top-2 left-2 bg-gray-200 hover:bg-gray-300 dark:bg-gray-700 dark:hover:bg-gray-600 rounded-full p-1 text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200"
+    onclick={closeTooltip}
+    aria-label="Close"
+  >
+    <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 20 20" fill="currentColor">
+      <path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd" />
+    </svg>
+  </button>
+  <div class="space-y-2 pl-6">
     <div class="font-bold text-base">
       <a href="/publication?id={node.id}" class="text-gray-800 hover:text-primary-400 dark:text-gray-300 dark:hover:text-primary-500">
         {node.title}
@@ -87,6 +112,12 @@
       Author: {getAuthorTag(node)}
     </div>
 
+    {#if node.isContainer && getSummaryTag(node)}
+      <div class="mt-2 text-xs bg-gray-100 dark:bg-gray-800 p-2 rounded overflow-auto max-h-40">
+        <span class="font-semibold">Summary:</span> {truncateContent(getSummaryTag(node) || "", 200)}
+      </div>
+    {/if}
+
     {#if node.content}
       <div
         class="mt-2 text-xs bg-gray-100 dark:bg-gray-800 p-2 rounded overflow-auto max-h-40"
diff --git a/src/lib/navigator/EventNetwork/index.svelte b/src/lib/navigator/EventNetwork/index.svelte
index 23aa12b..6a7fa61 100644
--- a/src/lib/navigator/EventNetwork/index.svelte
+++ b/src/lib/navigator/EventNetwork/index.svelte
@@ -304,6 +304,11 @@
       updateGraph();
     }
   });
+  
+  function handleTooltipClose() {
+    tooltipVisible = false;
+    selectedNodeId = null;
+  }
 </script>
 
 <div
@@ -322,6 +327,7 @@
       selected={tooltipNode.id === selectedNodeId}
       x={tooltipX}
       y={tooltipY}
+      on:close={handleTooltipClose}
     />
   {/if}
 
diff --git a/src/routes/visualize/+page.svelte b/src/routes/visualize/+page.svelte
index 35b837d..69341e2 100644
--- a/src/routes/visualize/+page.svelte
+++ b/src/routes/visualize/+page.svelte
@@ -155,6 +155,6 @@
     </div>
   {:else}
     <EventNetwork {events} />
-    <div class="mt-8 prose dark:prose-invert max-w-none" />
+    <div class="mt-8 prose dark:prose-invert max-w-none"></div>
   {/if}
-</div>
\ No newline at end of file
+</div>