While playing with his new telescope, Nick spots a man behaving oddly on a nearby bridge. When he later meets the same man at a party for a visiting Middle Eastern diplomat, Nick suspects that the foreign dignitary is in danger.
Bored with life, Nick threatens a return his career as a private detective. In order to discourage him from taking such a step, a friend bets Nick that he can't discover how he has stolen a priceless Inca artifact.
While on a Caribbean cruise, Nick and Nora investigate a burglary where the stolen goods are discovered in a fellow passenger's stateroom. The accused man is a New York City policeman who swears he was framed.
Nora has always wanted a brownstone, so Nick signs a lease for one. On moving day Nick and Nora find out their new home was the scene of a murder, in their bedroom no less. Nora refuses to stay and insists Nick get them out of the lease.
Barney once saved Nick's life. Now gangsters are after him and he wants Nick to hide him out. Things would be fine if Nora hadn't mistaken Barney's list of suspects for Nick's guest list for their housewarming.
Nora comes home to find a blonde in her bed. Nick arrives soon after saying he has no idea who the blonde is or how she got in. The blonde (Nita Talbot) claims to have no memory of who she is and demands everyone get out of her hotel room.
Writer Neil Jackson calls with the news that he has finished the last chapter of an overdue manuscript. Unfortunately, when Nick tracks Neil down, the writer has been murdered. It seems he based his chapter on an actual murder that is due to occur that night - but where?