Audiobook "Spider's Web" by Agatha Christie

Clarissa, the second wife of Henry Hailsham-Brown is known for spinning tales of adventure, but when a murder takes place in her own drawing-room, she finds live drama much harder to cope with, especially as she suspects that the murderer might be her young stepdaughter, Pippa.

Originally a play, this was novelised in 2000 by Charles Osborne.  Agatha Christie originally wrote the play for Margaret Lockwood.  The play premiered in London on 13th December 1954.