Christmas is not shaping up how Ciarán Darcy planned. Newly married to David 'Kastle' Kastellanos, they're spending the season with Ciarán's extended family at their estate in Northern England, and everyone has an opinion on the suitability of his new husband. The only person whose opinion Ciarán cares about is Lucius, the first Tremayne Veilwalker and someone Ciarán has learned a great deal about, but much to his annoyance, Lucius wants to test whether Kastle is a worthy husband for Ciarán
Kastle isn't inclined to be concerned by the thinly-veiled threats of a spirit casting judgement on those who marry into the Tremayne family, but finding a mysterious bundle of letters by his bed with the message 'find the miniature' is something else entirely. A ghost in the castle wants him to find something... but why?