TONIGHT’S BEST

L.A.’s Finest 9 p.m. on 22

Syd and McKenna (Gabrielle Union, Jessica Alba) move swiftly to find and apprehend a killer before he strikes again after a young woman’s murder is livestreamed on social media in the new episode “Defiance.” Meanwhile, Syd’s search for Gabriel Knox intersects with her partner’s past. John Salley, Barry Sloane and David Fumero guest star; Zach Gilford also stars.

Filthy Rich 10 p.m. on 9 22

Facing the reality that she has little choice but to accept Eugene’s illegitimate children, Margaret (Kim Cattrall) immediately shifts strategies, seeking a way to turn this unwelcome surprise revelation into a monetary advantage for herself and Sunny Club in the new episode “John 3:3.” Meanwhile, Rose (Aubrey Dollar) is shocked when she discovers the truth about Jason (Mark L. Young), and Margaret puts Eric (Corey Cott) in charge of the charitable arm of the company.

Emergency Call 11 p.m. on &

Actor Luke Wilson is both producer and host of this new unscripted series, which reveals how crucial the first minutes of any emergency can be. Told largely from the perspective of 911 call takers, the series focuses on the dramatic moments leading up to the arrival of help rather than the events after the firefighters, police or emergency medical service teams arrive. Until help arrives, the person at the other end of the phone line must calm and comfort the victim until they are safe.

Mountain Men 11 p.m. on 45

Mike heads out scouting for a bear, but the trip soon turns into an alpine goat hunt in “Call to Arms.” Elsewhere, Jake relies on his dogs to help settle an old score with a lion who has been causing problems. Sean and Tom run a check of their beaver sets to see whether their new trapping grounds are going to pay off. With his hand broken, Jason has to lean on his family to complete a task as the deadline looms.