Sebastian Mailer, travel agency owner, blackmailer and secret drug dealer, gives a tour of the Basilica of San Tommaso. The group was quite diverse. And it turns out to be Roderick Alleyne, who arrived in Italy as part of an investigation into a drug transit case. In the midst of the excursion, Sebastian disappears, and soon a corpse is found in the basilica...* * *A representative of the ancient aristocratic family, Hilary Bill-Tasman, buys back the once lost family estate and plans to restore it. At the same time, he hires people who were once convicted of murder as servants. On Christmas Eve, Bill-Tasman arranges a magnificent banquet, to which he invites Roderick Alleyn's wife, the famous artist Troy Alleyn. And in the midst of the celebration, one of the servants disappears, and the guests begin to receive anonymous notes with threats... It's time to call Roderick Alleyn.