Former NHL teammate Bobby Ehle hires Hayden Fuller to investigate the brutal murder of his ex-wife. Chances are Ehle, who has a history of domestic violence, may have done it. Fuller’s investigation drops him into a world of domestic terrorism (a revolutionary group, N’oublie jamais, plans to ruin Expo 67), psychedelic drugs (Blue 27 and Red 45) that can drastically change people’s personalities, and faux doctors with their hydrotherapy treatments and plastic surgery services. His quest takes an inner turn as Fuller confronts his own personal trauma and troubled past. On top of all this he reconnects with ex, Stana Younger. Together, can they solve one murder and prevent several more? A Fourth Face is the follow-up to Cheap Amusements, the debut Hayden Fuller Mystery.