‘Slow Horses’: Will James Callis Return as Claude Whelan in Season 6?

Diana Taverner (Kristin Scott Thomas) is where she belongs at the end of Slow Horses Season 5: First Desk. So, what does that mean for the person previously in that position, Claude Whelan (James Callis)? Well, he tries to go up against Jackson Lamb (Gary Oldman) in the finale and, of course, loses. After River Cartwright (Jack Lowden) saves his life, Whelan thinks he deserves a second chance. As for the rest of Slough House, he’s ready to throw them to the wolves, claim they did nothing to help, and blame them for the season’s mishaps. But Lamb has the recorder with Whelan’s attempt to blackmail Gimball…