Trent's Own Case is a 1936 British detective novel written by E.C. Bentley (in collaboration with H.Warner Allen) as a sequel to his best-known novel Trent's Last Case.
The artist and amateur criminologist, Philip Trent, investigates the murder of a cruel philanthropist whose portrait he had painted. But there are many false paths and blind alleys in the case, and it is not until he has crossed to France and back again and searched England for the champagne Felix Poubelle 1884; not until two others have died and an actress has disappeared, that Trent finally emerges triumphant to discover the murderer.
In Trent's Last Case, Philip Trent had fallen in love with one of the chief suspects, the victim's beautiful young widow, Mabel. In Trent's Own Case, they are happily married and have a six-year-old son. The reader gets a glimpse of their marriage in Chapter XV.
Trent's Own Case was followed by a collection of short stories, Trent Intervenes, published in 1938.