The Landlady is a brilliant gem of a short story from Roald Dahl, the master of the sting in the tail.

In The Landlady, Roald Dahl, one of the world's favourite authors, tells a sinister story about the darker side of human nature. Here, a young man in need of room meets a most accommodating landlady . . .

The Landlady is taken from the short story collection Kiss Kiss, which includes ten other devious and shocking stories, featuring the wife who pawns the mink coat from her lover with unexpected results; the priceless piece of furniture that is the subject of a deceitful bargain; a wronged woman taking revenge on her dead husband, and others.
source: https://www.penguin.co.uk/books/191/191980/the-landlady--a-roald-dahl-short-story-/9781405910910.html