Trunk Call to Murder

Why should a man pay six months' rent in advance for a garage and then never use it? Why should a young woman in a good job walk out of her flat at midnight, take all her clothes with her and then completely vanish? How was it that thousands of pounds vanished from locked safes from three establishments without there being any signs of entry? It took investigations over thousands of miles before Doctor Manson and the Three Musketeers of Homicide found the answers.