tonight’s PICKS

Walker 6 p.m., 3 a.m. on DRA WPIX

Actress Kelli Williams (“The Practice”) steps behind the camera to direct the new episode “Champagne Problems,” in which the close-knit Walker clan pulls out all the stops to celebrate the anniversary of Abeline and Bonham (Molly Hagan, Mitch Pileggi). Meanwhile, Cordell (Jared Padalecki) seeks a favor from Geri (Odette Annable), and Cassie (Ashley Reyes) finds a missing piece of her past. Kale Culley, Violet Brinson and Keegan Allen also star.

Call Me Kat 7 p.m. on CFCN # 10:01 p.m. on KAYU

In the Season 2 finale, “Call Me Shellfish,” Kat (Mayim Bialik) is struggling with anxiety over the future of her cat café until she comes up with a plan that may save the business. Meanwhile, Carter (Julian Gant) wrestles with jealousy as Max (Cheyenne Jackson) finally gets his big break. Ted Wass, Julia Sweeney, Andy Favreau and Laura Bell Bundy guest star; Kyla Pratt, Leslie Jordan and Swoosie Kurtz also star in the series, which faces an uphill battle for renewal.

Law & Order: Organized Crime 8 p.m. on CKAL ^ CITYTV 11 p.m. on KHQ

After the Brotherhood is linked to the kidnapping of a 9-year-old girl, Stabler (Christopher Meloni) teams up with his longtime partner Olivia Benson (recurring guest star Mariska Hargitay) on a joint investigation by the task force and the SVU detectives in the new episode “Lost One.” They’re acutely aware that the clock is ticking and the girl’s fate rests in their hands. Ainsley Seiger and Danielle Moné Truitt also star.

Welcome to Flatch 10:31 p.m. on KAYU

Kelly (Holmes) plans a special dinner when her father comes home in the new episode “Dinner, Dresses and Dumps.” Meanwhile, Shrub and Beth (Sam Straley, Erin Bowles) start spending a lot of time together, and Cheryl (Aya Cash) pulls out her “lucky dress” for a date with Jimmy (Desmin Borges). Seann William Scott, Taylor Ortega and Krystal Smith also star.