Sidney's slump worsens when a student sends him a play for review, "Deathtrap", a thriller that's nearly flawless. Desperate to revive his Broadway career, Sidney and his wife concoct a plan to kill the playwright and pass off the script as their own. However, things take a strange turn as Clifford arrives, and even a nosy psychic and Sidney's attorney struggle to distinguish truth from deception.

Deathtrap
A cunning playwright orchestrates a scheme to pilfer an amateur student's original script and claim it as his own masterpiece.