deathtrap be not a whodunit . it a who gon na do it to who first . it so hard to describe this movie without give anything away so i would not mention anything more about the plot . as far a act go it be cris reef great role a clifford and a young playwrite . you really see the range in his act ability in this movie from exhale cheeseburger to downright frighten . clifford be such a hard role to play and in the stage production of this i have never see clifford play well on both end of the spectrum . the actor play him a a little puppy or a homicidal maniac . reef be the only person i have see who have the character right all the way through . a for michael caine he . well he michael caine . one of the best actor of the last 50 year and in this film as good a he have ever be .