"Counterparts" is a television series that aired on Starz from 2017 to 2019. The show stars J.K. Simmons as Howard Silk, a low-level bureaucrat who discovers that his agency is hiding a portal to a parallel universe. The narrative explores themes of identity, choice, and the consequences of one's actions. The series combines elements of science fiction and espionage, as Howard navigates the complexities of his dual life. He encounters his counterpart from the alternate universe, leading to a gripping exploration of how different choices can shape a person's life. The show received critical acclaim for its writing and performances.