Iris Ciancaleoni Alunni committed suicide while she was on a cruise with her husband Sabatino. Two years later, the devastated widower seems to recover from his deep grief and meets a lady with whom he hopes to find comfort and affection for starting a new life. But one of Iris' friends is not persuaded that everything was really cleared up even though the police have no new elements to justify the reopening of the case. She turns to William Collins and his friends, whose reputation of talented amateur detectives is well known among the inhabitants of Capacciano, a Tuscan village perched on the hill surrounding Arezzo. Will they help her to find the truth about Iris' death? "Goodbyes, They Often Come In Waves" is the third instalment in the William Collins & Peter Boyle's series - another entertaining crime thriller.