As ever, Yann Calec finds himself captaining a steamer under suspicious circumstances: this time, the death of his superior officer. When the local cops look no farther for a suspect than an African longshoreman, Calec's passion for justice is aroused. But that's not the only mystery afoot, as a package of illicit diamonds goes missing. A sailor gets kidnapped, and only his finger is sent back. What does all this have to do with the late officer, much less the nun who was once his wife? The bodies continue to pile up as the Tramp saga wraps its latest two-parter.