The Open House by Michael Innes, just for fun category
John Appleby, formerly of Scotland Yard, is traveling through unfamiliar countryside when his car breaks down. After setting off to find an inn and get a place to spend the night, his flashlight dies. He has no choice but to hike along the dirt road hoping to find shelter.
He is stunned - literally - when he discovers a large house blazing with light. After he recovers, he heads for the building, hoping to find someone at home. But he can see no one. He discovers dinner on the table, laid for one, a fire and pajamas in the bedroom, but not a single person. He finds the library and helps himself to a drink.
Just like that, Appleby has stumbled onto another of the strange sort of mystery stories that typify Michael Innes. It reminded me of Death by Water or Sheiks and Adders, with that same sort of beginning. Not quite as much fun as those two books, it was still a good read.