Jimmi Simpson (born November 21, 1975) is an American stage, film and television actor, best known for his recurring roles in television series, such as House of Cards, It's Always Sunny in Philadelphia, Psych, and Westworld.
On the verge of retiring, Detective William Somerset takes one last case, with the help of the newly transferred David Mills. Together, they discover a series of murders and soon realize that they are dealing with a murderer who targets people he believes represent the seven deadly sins.