Kelly Macdonald is currently starring in Lanterns, a sci-fi detective series set in the DC Universe (DCU), which follows two Green Lanterns—Hal Jordan, played by Kyle Chandler, and John Stewart, played by Aaron Pierre—as they investigate an extraterrestrial mystery in a small American town. Macdonald plays Kerry Kane, the local sheriff who initially questions the Lanterns' authority but becomes entangled in the larger conspiracy. The show has been a major success, earning a high critics' score of 92% on Rotten Tomatoes and becoming one of the most-watched launches on HBO Max. Macdonald recently expressed surprise at not being cast in Slow Horses, a spy thriller she is a fan of. She mentioned her 2021 role as DCI Joanne Davidson in Line of Duty as a reason for her interest in Slow Horses, which is also based on a series of novels by Mick Herron. However, she praised Lanterns for its strong script and well-defined characters, calling her role as Kerry Kane a "dream role." She also complimented her co-stars, especially Kyle Chandler, for being collaborative and well-prepared on set. Macdonald is best known for her role in Line of Duty, where she portrayed DCI Joanne Davidson, a complex and determined police officer. She humorously suggested that if Slow Horses were to cast her, it would be an obvious choice, especially since her family is a fan of the show. She joked about her proximity to the Barbican, where Slow Horses was filmed, and playfully encouraged anyone from the show to reach out to her if they were looking for an actor. Despite her success in Lanterns, Macdonald remains open to new projects and continues to be involved in both film and television. Her ability to portray strong, intelligent characters has made her a sought-after actress in the industry, and her recent work has only added to her growing reputation as a versatile performer.