It’s a beautiful Christmas day in Como, and the Caswell-Jones family are celebrating with their nearest and dearest in their Villa Janus. Merriment and limoncello abound. That is, until Jonty Caswell-Jones is found dead in his study. With no staff today, the only suspects are the guests and the family. Under the surface, tensions have been brewing, guests seething and rivalries have reared their ugly head. Jonty’s wife, Catherine, knows there’s a killer among them so she calls her acquaintance, Elizabeth Chalice, to investigate. She wants to keep this firmly within the family if she can. No one else must know. As each suspect is interviewed in turn, Elizabeth must work out who killed Jonty and why.