Crosstrap is an interesting example of a 1960s British B-movie with a rather dark if ultimately a bit confusing storyline.
The film stars Gary Cockrell and Jill Adams as a couple who rent an isolated country cottage only to find there is a dead body in it!
Such things can usually ruin a holiday to be honest, especially when they find the cottage is being used as a hideout by a bunch of gangsters led by Lawrence Payne. Things turn even worse when a rival gang arrive and start shooting! Payne also plans for a different kind of "hit" on Adams.
The storyline is interesting and the film is a reasonable watch but is let down a bit by being somewhat confusing at times and also a bit silly at others. For curiosity and obscurity value it can't be beat though. The film was thought lost for a number of decades though a print was finally tracked down a few years ago.