'Door with Seven Locks' Summary

Dick Martin, on the verge of retirement and a life of leisure thanks to a hefty inheritance, is drawn back into the world of crime when he stumbles upon a bizarre case. A missing heir, a stolen book from a prestigious library, and a series of gruesome murders point towards a shadowy conspiracy. The trail leads Martin to an ancient tomb, guarded by a door with seven intricate locks, and he must decipher the riddle of the keys to unlock the tomb's secrets. The pursuit of the missing heir and the unraveling of the tomb's secrets reveal a web of deception, greed, and a dangerous plot to claim a vast fortune. Martin faces perilous situations, unraveling layers of deception, and confronts the mastermind behind the crimes, ultimately securing justice in a thrilling climax.