The Plot Thickens

New York schoolmarm Hildegarde Withers assists a detective when a body of unscrupulous stockbroker Gerald Parker suddenly appears in the penguin tank at the aquarium.

There are plenty of guilty secrets at the school where Hildegarde Withers teaches. When she finds the body of the pretty music teacher, she calls in her old friend Inspector Piper, who promptly arrests the obvious suspect. Clues multiply and everyone looks suspicious as Piper and Miss Withers continue their battle of the sexes.

An amateur sleuth suspects foul play when a fellow passenger on a seaplane suddenly dies. The third and final film with Edna May Oliver and James Gleason as the astute schoolteacher Hildegarde Withers and the New York Police Inspector Oscar Piper busy solving crimes.

When the body of Violet Feverel is discovered on the Central Park bridle path, Inspector Oscar Piper presumes her death was accidental, until his friend, amateur detective Hildegarde Withers, locates Violet’s horse and discovers it is streaked with blood.

Hildegarde Withers and Inspector Piper try to solve a murder while attending a popular Broadway show.

Leon Errol buys his wife a gift.

Leon hires a lookalike to take his place at home every night while he goes out partying.

Leon Errol plans to buy a doll as a gift for his wife; misunderstandings ensue.

Two detectives are plagued by the practical joke-pulling president of a novelty toy company.

While crossing the Atlantic, Jim White, an American tourist, is attracted by a charming young widow. He succeeds in making the lady's acquaintance through her four-year-old son and thereafter he becomes a persistent suitor and shadow. It happens that Luxor, Egypt, is the destination of both parties and when they arrive at that point Jim determines to win the widow without further delay. She does not encourage his suit and he becomes desperate. Jim hits upon a subterfuge and engages an Egyptian to help him out. However, the best laid plans often miscarry, and when the widow learns of the plot she prepares one of her own. Jim meets with a decided surprise and the little son is the means of bringing about a mutual understanding.

Jerry and Connie are engaged to be married, but they're also rival newspaper reporters, and when they're both assigned to cover the same murder case, the temptation to out-scoop the other threatens their relationship.

Edgar is running for county supervisor against his mother-in-law. Edgar, whose campaign is going nowhere, decides to try some dirty-tricks style tactics but, as usual, everything backfires on him.

An elderly gentleman arrives for an extended stay with his grown son in Chicago.

An heiress and a dog-catcher go searching for a priceless stamp.

An 11-year-old radio star decides to throw in her scripts and go undercover to get a better feel for her roles, but when she is kidnapped, trouble soon follows in this comedy.

An Iowa farmer's wife makes him move to Hollywood so their daughter can become a star.

Pete Pepper is a shy, timid circus performer who is scared to death of horses, but rides like a whirlwind when he has been hypnotized by "Ollie" Finch. Pete is entered as a competitor in a wild-west cross-country obstacle race...and has to ride without being hypnotized.

A crime spree in New York forces the police commissioner to turn to Englishman Simon Templar, who fights lawlessness and corruption through unorthodox methods. Templar sets his sights on individual crimes bosses, and after bringing down two vicious leaders through disguise and deception, discovers that there is a mastermind behind all the city's crime.

A juror at a murder trial is convinced the defendant is innocent.

Reformed jewel thief Simon Templar lands in hot water when a look-alike smuggles stolen goods out of Egypt.

The future of a group of strangely connected lives is determined on one crucial night at a dinky motel in the desert.