To make Sidney's slump all the more painful, Clifford Anderson, a student of one of Sidney's writing seminars, has recently sent his mentor a copy of his first attempt at playwrighting for Sidney's review and advice. The play, "Deathtrap," is a five character, two act thriller so perfect in its construction that, as Sidney says, "A gifted director couldn't even hurt it." Using his penchant for plot, and out of his desperate desire to once again be the toast of Broadway, Sidney, along with Myra, cook up an almost unthinkable scheme: They'll lure the would-be playwright to the Bruhl home, kill him, and market the sure-fire script as Sidney's own. But shortly after Clifford arrives, it's clear that things are not what they seem! Indeed, even Helga Ten Dorp, a nosey psychic from next door, and Porter Milgram, Sidney's observant attorney, can only speculate where the line between truth and deception lies. “故事”的秘密。关灯一刻，峰回路转。独幕剧。 学生安德森（克里斯托弗·里夫 Christopher Reeve 饰）在编剧上的的过人才华让如今早已江郎才尽的辛尼（迈克尔·凯恩 Michael Caine 饰）又羡慕又嫉妒，安德森让他想起了自己曾经有过的那些春风得意的时光。在辛尼的指导下，安德森完成了一个名叫《死亡计 中计》的剧本，准备在辛尼家中进行试演。辛尼从剧本中看出了商机，他明白，如此完美的剧本，必定会成为圈子里炙手可热的作品。 辛尼和妻子迈拉（黛恩·坎农 Dyan Cannon 饰）决定设计杀死安德森，将剧本据为己有，幸运的是，他们的诡计没能瞒住敏感的邻居海格（Irene Worth 饰）和精明的律师波特（亨瑞·琼斯 Henry Jones 饰），眼看着安德森一步一步的走向了死亡的陷阱，两人决定向其伸出援手。
