The Adventures of Sam Spade – The Love Letter Caper. ep144, 490327

A security guard dressed in a dark uniform is reaching for his sidearm, which is holstered on his right hip. He stands in front of a brick wall, with his left hand resting on his belt. His facial expression suggests a state of high alertness and readiness to act in case of any threat or danger.
Security Guard Drawing his Weapon --- Image by © Royalty-Free/Corbis "Used with permission from Microsoft."

Or, How to Be Happily Married, Though Single.

A letter from a stranger named, Ella comes to Sam. Is it legitimate, a prank, or from a damsel in distress? Sam rescues his damsel, amid the hale of gunshots. Ella’s story emerges. An uncle, a fiancée, and the control held over her inheritance. Why is there a packet of love letters written to Sam?

Soon the newspaper headlines go crazy with reports of the engagement of Ella and Sam. Ella seems to have bad luck with losing fiancées. Will Sam be able to break her run of bad luck? A search through grandma’s trunk could reveal some explanations, or cash, or dirt on relatives.

There’s enough to solve a string of murders, and blackmail. And is Sam still bound to be married? He resolves that matter as well.