The Little Murders of Agatha Christie S02 E03 Dumb Witness

Two murders are happening and the only witness there is is a dog. A castle is ravaged by ghosts who say they are going to reveal the name of the murderer. For Laurence, who doesn't believe in ghosts, this place stinks, especially now that her mother wants to get involved. As if that is not enough, her mother has also got it in her head to pair Avril, whom she loves, with her son. So a lot of headaches for the Commissione