Whodunit (noun)

A type of detective story in which the reader or viewer is challenged to solve a crime or mystery.

Origin:

1930s: from who + done + it.

Examples:

1. The novel was a classic whodunit with multiple suspects and a surprise ending.
2. The film was a suspenseful whodunit that kept audiences guessing until the end.
3. The murder mystery dinner was a whodunit that had everyone trying to solve the crime.
4. The whodunit was a popular genre in literature and film.
5. The whodunit was a challenging and engaging way to test one's problem solving and critical thinking skills.