whodunnit
noun /ˌhuːˈdʌnɪt/
/ˌhuːˈdʌnɪt/
(British English) (also whodunit North American English, British English)
(informal)- a story, play, etc. about a murder in which you do not know who did the murder until the endTopics Literature and writingc2, Film and theatrec2Word Origin1930s: from who done it?, non-standard form of who did it?