Can Nancy and the 90s Club at Whisperwood Retirement Village solve the mysteries plaguing nearby Lilac Inn before the current guests leave and the inn goes bankrupt? Nancy and the able, alert, and active 90s Club at Whisperwood Retirement Village are given a free week at the inn in exchange for finding out who is stealing the hotel's supplies and spreading rumors that the local legendary Green Monster is stalking the inn. Then valuable jewelry belonging to guests is stolen, and the inn's fortuneteller is murdered. This time the club hopes to solve the mysteries with no one getting hurt. The fourth in the series.