Lucy and Robert's joy in christening their new daughter in the village of Kurland St. Mary is only enhanced when Robert's aunt Rose-- now the second wife of Lucy's father Ambrose-- announces that she is with child. However, not everyone is happy about the news, in particular Rose's adult daughter Henrietta and her husband, who fear for their inheritance. Following the christening, Rose's son-in-law Basil Northam threatens to turn afternoon tea in the rectory into an unsightly brawl. The next morning, he is found in the rector's study, stabbed through the heart with an antique letter opener, clutching a note that appears to implicate the rector himself. As snow traps the members of the christening party in Kurland St. Mary, Lucy vows to clear her father's name.