Strongroom

Colin Gordon and Ann Lynn are closing up the bank branch for the long Easter weekend, when three masked men enter to rob the bank. When the charwomen enter the bank, they tie them up and gag them, shut them in the vault and sneak out. They are, it turns out, three ordinary, decent criminals in their first (and they hope their only) job. While two of them head off with the money, the other drives to a nearby town, where he will phone the police and leave the vault keys. They'll split 30,000 quid, Gordon and Miss Lynn will have a great story to tell, and everyone will be happy. Then the police come to the door. The third robber was in a road accident and killed. The two survivors work out he hadn't made the call yet, and there's only so much air in the vault. The evidence clerk has the keys, but wont release them.

There are some very useful coincidences in the story, but it's certainly a well told one. Will the two robbers return to the scene of their crime, lest they become murderers? Will they get the trapped people out? Will the police catch on to what they are doing? the result is an exciting one with nice performances and interesting characters.