Overview
Busman's Honeymoon is a 1937 novel by Dorothy L. Sayers, her eleventh and last featuring Lord Peter Wimsey, and her fourth and last to feature Harriet Vane.
Plot introduction
Lord Peter Wimsey and Harriet Vane marry and go to spend their honeymoon at Talboys, an old farmhouse in Hertfordshire which he has bought her as a present. The honeymoon is intended as a break from his usual routine of solving crimes, and hers of writing about them, but it turns into a murder investigation when the seller of the house is found dead at the bottom of the cellar steps with severe head injuries.
Plot
After an engagement of some months following the events at the end of Gaudy Night, Lord Peter Wimsey and Harriet Vane marry. They plan to spend their honeymoon at Talboys, an old farmhouse in Harriet's native Hertfordshire which Wimsey has bought for her, and they abscond from the wedding reception, evading the assembled reporters.
Arriving late at night, they are surprised to find the house locked up and not prepared for them. They gain access and spend their wedding night there, but next morning the former owner, Noakes, is found dead in the cellar with head injuries. The quiet honeymoon is ruined as a murder investigation begins and the house fills with policemen, reporters, and brokers' men distraining Noakes' hideous furniture.
From Wikipedia (CC BY-SA 4.0).