If you are looking for a sonic-boom-special-effects monster, click the BACK button on your browser.Deathtrap was written by Ira Levin (Sliver, The Stepford Wives, Rosemary's Baby). It's a stage play, adapted for the screen. 95% of the movie takes place in the gorgeous home of playwright Sidney Bruhl (Michael Caine). He's the author of a fabulously successful Broadway play, but his last 4 efforts have flopped - horribly.An aspiring playwright, Clifford Anderson (Christopher Reeve), who attended a play-writing workshop given by Sydney, has sent him a copy of the play he has written. Sydney tells his wife, Myra (Dyan Cannon) the play is fabulous - a sure-fire hit. But is it good enough to die for? Time will tell.Clever dialog and numerous twists and turns in the plot keep this movie entertaining from beginning to end. The whole cast seems to have a good time. It's reminiscent of another fun Michael Caine mystery: Sleuth. Worth watching.