[1] Billy Weaver is a seventeen-year-old youth who has travelled by train from London to Bath to start a new job.
Billy discovers that her boarding house is extremely cheap, and finds the woman somewhat eccentric and absent-minded, but very kind.
The implication is that the landlady has poisoned Billy's tea with cyanide and intends to stuff his corpse, as she has already done to Mulholland and Temple.
The closest he came was with "The Landlady", but after reading it through he decided that he had not "brought it off", so changed the ending to make the twist non-supernatural.
[3] In 1979, Siobhán McKenna appeared in the title role of The Landlady in an episode of the British TV series Tales of The Unexpected, where she played a seemingly charming and maternal, but eccentric, landlady who murders her male tenants and adds them to her collection of stuffed creatures.