Lady Violet Holds a Baby. The Lady Violet Mysteries, #5

If it's not weddings, then hapless widows are expected to attend christenings. Lady Violet returns with St. Sevier to her family seat, and finds Derwent Hall at sixes and sevens upon the occasion of her nephew's christening. Other guests have brought their children along to celebrate the occasion, and Sebastian MacHeath is on hand to serve as godfather. Nobody seems to be getting along, despite the happy nature of the gathering.
Summer heat builds to an unbearable crescendo as clandestine affairs, marital troubles, and family tensions escalate. Then somebody starts stealing little girls, and Lady Violet must figure out who, why, and how the kidnapper can be foiled.