Which fan-fiction story of "The New Investigations of Hercule Poirot" collection is the best?

• The Case of the Gold Hairpin

• The Mysterious Kidnapping

• The Missing Brooch

• The Body in the Bathroom

• The Adventure of Poirot’s Friend

• The Tragedy at Greensville

• The Mystery of the Haunted Hotel

• The Red Herring

• The Baby on the Church Steps