It's not often that you see Elsa Lanchester (or is it Manchester, or Lancashire?) top the bill whilst Charles Laughton languishes mid-table, but that she does in this slapstick comedy. She just happens to pass a building where just moments earlier, we have seen a group of stripey-clad criminals capture a curious police officer. In the fracas, he has dropped his whistle. She blows it, and next thing there's a full scale street battle going on between the arriving constabulary and the holed-up nasties. Terrified - with that big-eyed look that she mastered so well, the young woman is trying to…