Counterpart (2017–2019)
8.1
10
19548
J.K. Simmons, Olivia Williams, Harry Lloyd, Nazanin Boniadi
A hapless UN employee discovers that the agency he works for is hiding a gateway to a parallel dimension that's in a cold war with our own, and where his other self is a top spy. The war slowly heats up thanks to spies from both sides.