Don't miss all the legal drama in this Season 4 finale, titled This Is Rome. Harvey and Jessica make several moves to protect the firm, while Louis scrambles to get his own affairs in order. The series has been renewed for a fifth season. Bravo, 8 p.m.
In the episode titled Kiss of Death, detectives Flynn and Vega must determine who might be responsible when a bestselling mystery novelist is poisoned with what is discovered to be a rare toxin. Meanwhile, Flynn gets a happy surprise. CTV/ABC, 9 p.m.
Cat and Leo investigate when a hard-working maid from El Salvador is shot in the street in the new episode Double Identity. What they discover is that the maid was actually a cop in Venezuela and disappeared months before. NBC, 9 p.m.
George Stroumboulopoulos: Tom Wilkinson
David Letterman: Kathy Griffin, Jeremy Messersmith
Jimmy Fallon: Jared Leto, Amy Brenneman
Jimmy Kimmel: Ted Danson, Eva Green
Craig Ferguson: Ricky Gervais, Keb' Mo'
Seth Meyers: Regis Philbin, John Henson
Conan O'Brien: Pierce Brosnan, Jaime King