Amelia Sacks is about to marry into one of Nantucket's wealthiest families. The groom's mother, Greer Garrison Winbury is a famous author of murder mystery novels who spares no expense to organize a lavish and memorable ceremony at their oceanfront estate. However, when a body is discovered at Nantucket Harbor just hours before the ceremony, everyone at the wedding is suddenly a suspect. It's up to Police Chief Ed Kapenash to find out what happened.