Ep. 20: Keaton and Eric encounter armed Polish mafia on Cara Island after witnessing a murder at the hotel.

On Cara Island, Keaton and Eric Graves are served tea by waiter Jonathan. Eric aspires to join the Special Air Service. After witnessing alcoholic Mr. Foster harass waitress Helen, gunshots ring out near the quay. Keaton and Eric discover a dead man and a heavily wounded Detective Rupert. They carry Rupert to the hotel lobby, where they are surrounded by armed Polish mafia members Mr. Herman, Otto, and Karol. Forced to wait six hours for the sandbar to reappear, the mafia confine Keaton, Eric, Rupert, Foster, Jonathan, and Helen to a second-floor room. Rupert explains he intervened when Oscar Neal, a Lessing Pharmaceuticals researcher, handed over a stolen floppy disk with a secret asthma cure. The mafia killed Oscar and plan to distribute the cure. They take Keaton to repair a boat while others remain. Foster, a former colonel, attempts to shoot the mafia using Eric as bait but is subdued by Herman. Foster stalls Herman until Keaton breaks the window and captures him. With Foster and Rupert recovering, Eric describes Foster as a brave coward.
Episodes
- Ep. 16 · Keaton helps Robert Fenders and Lord Fenders find renewal through an elm tree and music.
- Ep. 17 · Keaton investigates Edmund Lyman's murder while protecting widow Flora from hidden dangers.
- Ep. 18 · Professor Benington outwits con men Travis and Galade to save Lambeth College from William Stephane
- Ep. 19 · Shinsuke and Yuriko journey to the mountains to release a hawk while Keaton follows.
- Ep. 20 · Keaton and Eric encounter armed Polish mafia on Cara Island after witnessing a murder at the hotel.
- Ep. 21 · Keaton and Taihei investigate the thistle emblem on a watch and whisky bottle in Edinburgh.
- Ep. 22 · Keaton uncovers the secret behind the rare Chateau Lajonchee 1944 vintage wine in Burgundy.
- Ep. 23 · Keaton captures Bruce Kendall in the Lake District while navigating dangerous marshes and hostile supporters.
- Ep. 24 · Daniel and Keaton investigate the suspicious death of archaeologist Stuart Atkins in White Wells.