Mark Ablett is hosting all his friends at his English country house when he receives a letter from his estranged brother, Robert, announcing Robert's intention to arrive from Australia. Not long after his arrival, Robert turns up dead, his body found with a bullet wound to the head, and Mark is nowhere to be seen. Antony Gillingham and his friend Bill Beverly play Sherlock Holmes and Doctor Watson to solve this whodunnit mystery. This is Milne's only mystery novel.

Cast:

• Narrator - Elizabeth Klett
• Antony Gillingham - Andy Harrington
• Bill Beverly - Tyler Hyrchuk
• Matthew Cayley - Josh Innerst
• Mrs. Stevens - Liz Blackett
• Audrey Stevens - Amber Hegarty
• Elsie - Amanda Friday
• Robert Ablett - Ben Lindsey-Clark
• Major Rumbolt - Ron Altman
• Betty Calladine - Ella Lynch
• Ruth Norris - Lillian Rachel
• Mark Ablett - Graham Scott
• Old Gillingham - Alan Weyman
• Landlady - Jennie VanderLugt
• Landlord - Marty Krz
• Mrs. Calladine - Sara Sheckells
• Inspector Birch - Rob Goll
• Parlour Maid - Sydnee Fullmer
• Kitchen Maid - Leanne Yau
• Angela Norbury - Anna Grace
• Mrs. Norbury - Danielle Cohen
• Andrew Amos - Andrew Coleman
• Parsons - David Stifel
• Coroner - Jeff Moon
• John Borden - Lance Rasmussen