This crime thriller is one of many that the British film industry churned out quickly and cheaply in the late 1950s and early 1960s. Some titles managed to overcome their limitations and emerge as taut pieces of superb character drama that remain powerful some fifty years later. Alas, Crosstrap is not one of them.
Briefly, it's plot concerns a young married couple celebrating their anniversary with a return to a remote romantic haven only to find that is now being utilised by a gang of jewel thieves who take them prisoner. This gang in turn are soon under siege from a rival gang of crooks, which makes their captors more desperate and limits the chances of the husband and wife escaping with their lives even further.
Sadly, the film frequently gives the impression that it has been thrown together with little thought. Many shots just don't match up, with jarring changes between studio work and location filming, and lighting levels are inconsistent, with a character appearing in twilight, then broad daylight, then twilight again in a single sequence.
The incidental music seldom reflects the events that are unfolding on screen.
The plot seems hopelessly confused at times and largely centers on the lead villain allowing an instant and unlikely infatuation with the young woman to risk the success of the whole operation. The gang are waiting for an aircraft to arrive for them, so naturally they have chosen a densely wooded area to facilitate this move. Hmmm....
The characters themselves range from the bland to the mildly interesting, and that's about as good as this one gets, unfortunately. It might help you pass an hour, but there are much better examples of the genre out there to be found.