The Nine Wrong Answer is a detective story by John Dickson Carr which does not feature any of Carr's series detectives. This novel is a whodunnit mystery, with an emphasis on the puzzle aspect. The title derives from Carr's atypical use of footnotes to address the reader, remarking on certain interpretations of events, conclusions, or mystery cliches, and telling the reader to discard them, while also urging a very literal interpretation of text. These serve as the "nine wrong answers," while in the denouement, the protagonist reveals the nine correct answers he arrived at in order to solve the mystery.