What literary technique that introduces a radical change in the direction or expected outcome of the plot is the play "Mousetrap" known for using?
The Mousetrap: The Mousetrap is a murder mystery play by Agatha Christie. The Mousetrap:  The play is known for its twist ending, which the audience are traditionally asked not to reveal after leaving the theatre. Plot twist: A plot twist is a literary technique, introducing a radical change in the direction or expected outcome of the plot in a work of fiction.
plot twist