Meets Alex Kingston's US Ambassador in New 'The Chelsea Detective' Season 3 Sneak Peek [Exclusive]

British mystery series The Chelsea Detective returns next Monday, April 7. The remaining three episodes of Season 3, all 90-minute episodes, begin with "Deadlock" on April 7. Adrian Scarboroughand Vanessa Emme return as Detective Inspector Max Arnold and Detective Sergeant Layla Walsh. The Acorn TV series, with its feature-length episodes, surrounds the murder and mystery hiding beneath London's Chelsea neighborhood. Collider is unveiling an exclusive sneak peek for the episode "Deadlock." The episode, airing April 7, features Alex Kingston (Doctor Who) guest starring as US Ambassador Emily Morgan.