The Fog Ladies are at it again, spunky senior sleuths and an overstressed young medical resident solving murders from their elegant apartment building in San Francisco. They join a senior dating group, and romantic intrigue soon turns to murder. Graham Parselle, lady killer extraordinaire, plunges off a cliff on a Senior Singles outing. Did one of his dates pitch him over? Or is Olivia Honeycut's new beau to blame?