diff --git a/packages/web/src/App.svelte b/packages/web/src/App.svelte
index efbaad8..1cd1ade 100644
--- a/packages/web/src/App.svelte
+++ b/packages/web/src/App.svelte
@@ -2958,7 +2958,7 @@
           {:else}
             {#each net.log as line, i (i)}
               <div class:table-talk={line.text.startsWith("\u{1F4AC}")}>
-                {line.text}
+                <span class="log-mark" class:blank={!line.actor} style:background={line.actor ? playerColor(line.actor) : "transparent"}></span>{line.text}
                 {#if line.notable && line.turn !== null && prefs.instantReplay && !net.spectating}
                   <button class="moment-eye" title="relive this turn"
                     onclick={() => net.requestMoment(line.turn!)}>👁</button>
@@ -3848,6 +3848,14 @@
     min-height: 1.55rem;
   }
   .slip.creature-note { background: #e7edda; border-color: #7d8a5a; }
+  .score-row.active {
+    font-weight: 700;
+    background: rgba(58, 47, 31, 0.08);
+    border-left: 3px solid #3a2f1f;
+    margin-left: -0.45rem;
+    padding-left: 0.3rem;
+    border-radius: 2px;
+  }
   .score-row.active .score-name { font-weight: 700; }
   .score-temper {
     font-family: "Caveat", cursive;
@@ -3916,6 +3924,17 @@
     box-shadow: 0 2px 7px rgba(0, 0, 0, 0.45);
   }
   .chronicle div + div { margin-top: 0.05rem; }
+  /* the acting wizard's color, so one player's lines can be picked out at a glance */
+  .log-mark {
+    display: inline-block;
+    width: 0.55em;
+    height: 0.55em;
+    margin-right: 0.45em;
+    border-radius: 2px;
+    border: 1px solid rgba(58, 47, 31, 0.35);
+    vertical-align: 0.05em;
+  }
+  .log-mark.blank { border-color: transparent; }
   .moment-eye {
     background: none;
     border: none;
diff --git a/packages/web/src/net.svelte.ts b/packages/web/src/net.svelte.ts
index 187049a..2469518 100644
--- a/packages/web/src/net.svelte.ts
+++ b/packages/web/src/net.svelte.ts
@@ -234,6 +234,22 @@ export interface LogLine {
   text: string;
   turn: number | null;
   notable: boolean;
+  /** The wizard acting, for the color mark beside the line: whoever
+   * cast, struck, walked, or countered — otherwise the turn's owner. */
+  actor?: string;
+}
+
+/** Events whose `player` is the one acting rather than the one acted on. */
+const ACTING = new Set([
+  "moved", "warpStepped", "jumpedPit", "counteractionPlayed", "treasurePickedUp", "treasureDropped",
+  "numberPlayedForMovement", "cardsDiscarded", "turnStarted", "turnEnded", "doorUnlocked", "madDash",
+  "climbedFromPit", "spellTrapped",
+]);
+function actorOf(e: GameEvent, turnOwner: string | null): string | undefined {
+  const any = e as unknown as Record<string, unknown>;
+  for (const k of ["caster", "attacker", "by", "owner"]) if (typeof any[k] === "string") return any[k] as string;
+  if (ACTING.has(e.type) && typeof any.player === "string") return any.player as string;
+  return turnOwner ?? undefined;
 }
 
 /** The boundaries the turn count walks — mirrored by the server's
@@ -305,6 +321,8 @@ class Net {
    * socket that never fires onclose; the watchdog closes it by hand so
    * the reconnect loop (and the masthead banner) actually engage. */
   private lastHeard = Date.now();
+  /** Whose turn the chronicle is in, for the mark on lines with no actor of their own. */
+  private turnOwner: string | null = null;
   private watchdog: ReturnType<typeof setInterval> | null = null;
   roomId = $state<string | null>(null);
   players = $state<string[]>([]);
@@ -510,6 +528,7 @@ class Net {
             this.openingRolls = { rolls: e.dieRolls, first: e.firstPlayer, players: e.players };
           }
           if (TURN_BOUNDARY.has(e.type)) this.turnCounter++;
+          if (e.type === "turnStarted") this.turnOwner = e.player;
           const line = humanize(e);
           if (line) {
             // Every turn wears its eye, on the header line that opens
@@ -517,7 +536,7 @@ class Net {
             // winning line carries its own besides.
             const notable = this.turnCounter >= 0 &&
               (e.type === "gameWon" || TURN_BOUNDARY.has(e.type));
-            this.log = [...this.log, { text: line, turn: this.turnCounter >= 0 ? this.turnCounter : null, notable }];
+            this.log = [...this.log, { text: line, turn: this.turnCounter >= 0 ? this.turnCounter : null, notable, actor: actorOf(e, this.turnOwner) }];
           }
         }
         if (talk > 0) {
@@ -545,7 +564,7 @@ class Net {
         break;
       }
       case "chat": {
-        this.log = [...this.log, { text: `\u{1F4AC} ${msg.player}: ${msg.text}`, turn: null, notable: false }];
+        this.log = [...this.log, { text: `\u{1F4AC} ${msg.player}: ${msg.text}`, turn: null, notable: false, actor: msg.player }];
         this.chatCount += 1;
         if (this.roomId) this.markChatSeen();
         break;