Suspense Detective #5

A man named Mark discovers his wife Margaret has vanished from their locked house, leaving all her clothes and belongings behind. Detective Mac investigates and finds Margaret's body in a coffin at a funeral home, where she cries out for help before being placed in the hearse. Mac pursues the case, discovering a taxi driver named Pop who is being forced to transport Margaret against his will to protect his granddaughter Peggy. A young veterinarian named Stuart Grane learns about John Smith's mysterious death a year earlier and investigates, uncovering that Smith was actually Henry Nostrand in disguise; when confronted with this discovery, the impostor reveals he inherited his uncle's money and lived a good life, leaving nothing more to the story.