COUNTERPART
Starz!, 8:00 p.m. ET
Last week, J.K. Simmons ended that episode of Counterpart with a separated-by-glass verbal showdown between his two lookalike personae — one from each world — and showed how clearly he was capable of delineating each character. (It was the best split-screen solo acting since Tatiana Maslany in Orphan Black.) There are only two episodes left this season, and the two worlds, and the characters traveling between them and killing people, have never been closer.