The Greene Murder Case by S. S. Van Dine

In a stately mansion on New York's Upper West Side, the wealthy and eccentric Greene family finds itself at the center of a chilling murder mystery. When the family matriarch is found dead, followed by a series of subsequent murders, the brilliant detective Philo Vance is called upon to unravel the tangled web of secrets, motives, and deceit. As Vance delves deeper into the Greene family's history and dynamics, he must navigate through a maze of greed, jealousy, and betrayal to uncover the truth behind the sinister events that threaten to destroy the family from within.