Ira Levin’s whip-smart stage play, Deathtrap, was adapted for the big-screen and saw Michael Caine square-off against Christopher Reeve in this captivating cat-and-mouse, twisting thriller. Micheal Caine is playwright, Sidney Bruhl. He’s just had his latest stage thriller flop on opening night. It’s his latest failure in a string of them. Things are exacerbated, when…