diff --git a/src/expert-insurer/expert-insurer.controller.ts b/src/expert-insurer/expert-insurer.controller.ts
index d1457c0..f0193be 100644
--- a/src/expert-insurer/expert-insurer.controller.ts
+++ b/src/expert-insurer/expert-insurer.controller.ts
@@ -242,24 +242,19 @@ export class ExpertInsurerController {
   }
 
   @ApiParam({ name: "expertId" })
-  @ApiQuery({ name: "role", enum: ["claim", "blame"] })
+  @ApiOperation({
+    summary: "Files handled by one roster expert (summary rows)",
+    description:
+      "Resolves id against this insurer's `expert` then `damage-expert` roster. Blame branch runs when the id is on the expert roster (field experts). Each item is a small summary (`kind`, ids, statuses, dates)—not full file payloads. Claim matches use final or draft damage-expert reply.",
+  })
   @Get("/:expertId")
-  async requestDetail(
-    @CurrentUser() insurer,
-    @Param("expertId") id: string,
-    @Query("role") role: "claim" | "blame",
-  ) {
-    if (!Types.ObjectId.isValid(new Types.ObjectId(id))) {
+  async requestDetail(@CurrentUser() insurer, @Param("expertId") id: string) {
+    if (!Types.ObjectId.isValid(id)) {
       throw new BadRequestException("Invalid expert ID");
     }
 
-    if (!["claim", "blame"].includes(role)) {
-      throw new BadRequestException("Invalid role");
-    }
-
-    return await this.expertInsurerService.getAllFilesByExpertAndRole(
+    return await this.expertInsurerService.getAllFilesForInsurerExpert(
       id,
-      role,
       insurer.clientKey,
     );
   }
diff --git a/src/expert-insurer/expert-insurer.service.ts b/src/expert-insurer/expert-insurer.service.ts
index a49fedc..62755e9 100644
--- a/src/expert-insurer/expert-insurer.service.ts
+++ b/src/expert-insurer/expert-insurer.service.ts
@@ -144,6 +144,55 @@ export class ExpertInsurerService {
     };
   }
 
+  /** BlameCases may tie the field expert via assignment, expert-initiated id, or decision author. */
+  private blameFieldExpertIdCandidates(b: any): string[] {
+    const raw: unknown[] = [
+      b?.expert?.assignedExpertId,
+      b?.initiatedByFieldExpertId,
+      b?.expert?.decision?.decidedByExpertId,
+    ];
+    const out = new Set<string>();
+    for (const x of raw) {
+      if (x != null && x !== "") out.add(String(x));
+    }
+    return [...out];
+  }
+
+  private claimDamageExpertActorId(c: any): string | null {
+    const reply =
+      c?.evaluation?.damageExpertReplyFinal || c?.evaluation?.damageExpertReply;
+    const aid = reply?.actorDetail?.actorId;
+    if (aid == null || aid === "") return null;
+    return String(aid);
+  }
+
+  private mapBlameFileSummaryForInsurerExpert(b: any) {
+    return {
+      kind: "blame" as const,
+      requestId: String(b._id),
+      publicId: b.publicId,
+      requestNo: b.requestNo,
+      type: b.type,
+      status: b.status,
+      blameStatus: b.blameStatus,
+      createdAt: b.createdAt,
+      updatedAt: b.updatedAt,
+    };
+  }
+
+  private mapClaimFileSummaryForInsurerExpert(c: any) {
+    return {
+      kind: "claim" as const,
+      requestId: String(c._id),
+      publicId: c.publicId,
+      requestNo: c.requestNo ?? c.requestNumber,
+      status: c.status,
+      claimStatus: c.claimStatus,
+      createdAt: c.createdAt,
+      updatedAt: c.updatedAt,
+    };
+  }
+
   private buildPartiesPreview(parties: any[] | undefined) {
     if (!Array.isArray(parties) || !parties.length) return undefined;
     return parties.map((p: any) => ({
@@ -365,10 +414,8 @@ export class ExpertInsurerService {
     return scored.sort((a, b) => b.combinedScore - a.combinedScore).slice(0, 10);
   }
 
-  private async assertExpertBelongsToInsurer(
-    expertObjectId: Types.ObjectId,
-    insurerClientKey: string,
-  ) {
+  async getAllFilesForInsurerExpert(expertId: string, insurerClientKey: string) {
+    const expertObjectId = this.parseObjectId(expertId, "expert id");
     const clientOid = this.getClientId(insurerClientKey);
     const ckFilter = this.clientKeyScopeFilter(clientOid);
     const [experts, damageExperts] = await Promise.all([
@@ -376,42 +423,36 @@ export class ExpertInsurerService {
       this.damageExpertDbService.findAll(ckFilter as never),
     ]);
     const id = String(expertObjectId);
-    const ok = [...experts, ...damageExperts].some((e) => String(e._id) === id);
-    if (!ok) {
+    const onBlameRoster = experts.some((e) => String(e._id) === id);
+    const onClaimRoster = damageExperts.some((e) => String(e._id) === id);
+    if (!onBlameRoster && !onClaimRoster) {
       throw new ForbiddenException(
         "This expert is not registered under your insurance company.",
       );
     }
-  }
 
-  async getAllFilesByExpertAndRole(
-    expertId: string,
-    role: "claim" | "blame",
-    insurerClientKey: string,
-  ) {
-    const expertObjectId = this.parseObjectId(expertId, "expert id");
-    await this.assertExpertBelongsToInsurer(expertObjectId, insurerClientKey);
-    const clientKeyStr = String(this.getClientId(insurerClientKey));
-
-    if (role === "claim") {
+    const clientKeyStr = String(clientOid);
+    if (onBlameRoster) {
+      const blames = (await this.blameRequestDbService.find({}, { lean: true })) as any[];
+      return blames
+        .filter(
+          (b) =>
+            blameCaseTouchesClient(b, clientKeyStr) &&
+            this.blameFieldExpertIdCandidates(b).includes(id),
+        )
+        .map((b) => this.mapBlameFileSummaryForInsurerExpert(b));
+    }
+    if (onClaimRoster) {
       const claims = (await this.claimCaseDbService.find({}, { lean: true })) as any[];
       return claims
         .filter(
           (c) =>
             claimCaseTouchesClient(c, clientKeyStr) &&
-            c?.evaluation?.damageExpertReply?.actorDetail?.actorId ===
-              String(expertObjectId),
+            this.claimDamageExpertActorId(c) === id,
         )
-        .map((c) => this.normalizeClaimCase(c));
+        .map((c) => this.mapClaimFileSummaryForInsurerExpert(c));
     }
-    const blames = (await this.blameRequestDbService.find({}, { lean: true })) as any[];
-    return blames
-      .filter(
-        (b) =>
-          blameCaseTouchesClient(b, clientKeyStr) &&
-          String(b?.expert?.assignedExpertId ?? "") === String(expertObjectId),
-      )
-      .map((b) => this.normalizeBlameCase(b));
+    return [];
   }
 
   private validateInsurerFileRating(rating: FileRating) {