Plot: Suspecting that her boss, Elliott D'Souza, has been murdered by playboy/publisher Dexter Larsen after withdrawing his financial backing for Larsen's Sapphire magazine, D'Souza's secretary hires Monk to investigate. After enlisting the help of the initially reluctant Stottlemeyer and Disher and convincing them that D'Souza's death was no accident despite his being alone in a room locked from the inside, Monk suddenly tries to withdraw from the case