The Door with Seven Locks

Dick Martin is leaving Scotland Yard. His final job, investigating a stolen book, takes him from a conversation with librarian Sybil Lansdown to a meeting with a Doctor Stalletti, who will become a key figure. Along the way, Martin becomes involved with a small-time crook—an expert at picking locks—who tells him about a recent lock-picking job that has made him quite nervous. But before he can pass along details, the lock-picker is murdered. Next, the retiring detective gets involved in a couple of seemingly unrelated incidents—the theft of an obscure book, and an assignment to chase after a very rich and very elusive young heir who is rarely seen. In the midst of all the chasing about, there is a desperate search underway for seven individual keys which, when all used together, can open a mysterious door in a family’s tomb. Doctor Stalletti is involved, clearly an unsympathetic and sinister character, suspected of carrying out unethical medical experiments, to say the least. There are