In his shabby apartment, Philip gets connected with his next case. The landlady has been hearing suspicious tapping sounds, and wants Philip’s expertise in figuring it out. Mr Larry seems to be hiding something, but the problem seems to be all in the imagination of the landlady. Then a gunshot is heard.
Time to get the cops involved. Homer, the security guard, is suspected in playing a part by Marlowe, and he finally catches up to the man. Played by Arthur Q Brian. Marlowe keeps poking around to stir things up. Some truth comes to light about royalty that fled their homeland, and more drama related to it. Who is the killer? What’s the motive behind the mystery? In the end, Marlowe explains it all.