if you be look for a sonic boom special effect monster and click the back button on your browser . deathtrap be write by ira levin ( sliver and the stepford wive and rosemary baby ) . it a stage play and adapt for the screen . 95 % of the movie take place in the gorgeous home of playwright sidney bruhl ( michael caine ) . he the author of a fabulously successful broadway play and but his last 4 effort have flop horribly . an aspiring playwright and clifford anderson ( christopher reeve ) and who attend a play write workshop give by sydney and have send him a copy of the play he have write . sydney tell his wife and myra ( dyan cannon ) the play be fabulous a sure fire hit . but be it good enough to die for . time will tell . clever dialog and numerous twist and turn in the plot keep this movie entertain from begin to end . the whole cast seem to have a good time . it reminiscent of another fun michael caine mystery represent sleuth . worth watching .