I am starting this thread as a repository for actual play summaries of Trail of Cthulhu. I’ll begin! I played in Adam Gauntlett’s Sisters of Sorrow adventure at Philly Games Con. The GM was John Potts and he ran a fun game! We only had two players, so I was the Chief Engineer and the other player, Neil, played the Executive Officer. The adventure is set aboard a First World War German submarine, and the adventure involves things getting progressively weirder aboard the boat due to strange noises and weird visions. We’re able to discount these things as tricks played by the more experienced crew on new submariners—sort of like initiation rituals. Our encounter with a derelict vessel leads to disaster. As we wonder what could have forced the other crew to abandon ship, and thank fortune that we still have our vessel, it becomes increasingly clear that we are at risk of the same fate! Our mission becomes one of survival and getting back home. At the end, with safety in sight, the Chief Engineer concludes that the submarine is a threat to the rest of the Navy—a plague ship of sorts—and must be scuttled! The XO tries to prevent this act, but his own love of the Navy makes him, too, realize the truth. The ship must go down, and they with it! Arm in arm, and singing of Deutschland, they drop into the cold, dark waters of the Heligoland Bight.