Fargo (10 p.m., FX) – Presidential candidate Ronald Reagan comes through town on a campaign tour. Though Lou is assigned to his security detail, he finds himself sidelined. Also, Floyd takes action, while Peggy and Ed disagree about what to do next.
Also on tonight . . .
Crazy Ex-Girlfriend (8 p.m, CW) – After a terrible date, Greg accuses Rebecca of being a terrible person – in front of Josh.
Supergirl (8 p.m. CBS) – Reactron, an enemy of Superman, targets Supergirl, testing her powers.
Jane the Virgin (9 p.m, CW) – Jane feels ready to make a decision about her love life. Also, Rogelio is determined to confront his nemesis, Britney Spears.
Major Crimes (9 p.m., TNT) – Jack Raydor defends a man who is attempting to withdraw a confession in the murder of his wife.
Stray Dog (10 p.m., UNC-TV) – An Independent Lens documentary about a Vietnam vet who comes to terms with his combat experience so he is able to help others.
Castle (10 p.m., ABC) – Det. Slaughter (Adam Baldwin) asks Castle for help solving a high-stakes robbery case.