Rocks learns Dr. Clitterhouse's real identity and shows up at his Park Avenue office. Rocks tries to blackmail the doctor into using his office as a safehouse as they rob the doctor's own wealthy friends. Clitterhouse learns that Rocks will not let him publish his incriminating research, and also realizes that he has not studied the ultimate crime – murder – which will be the final chapter to his book. So, he gives a poisoned drink to Rocks, and he studies his symptoms as he dies. Jo helps dispose of the body in the river, but it is recovered and the poison is detected by the police.
