Monday’s TV highlights: ‘David Cassidy: The Last Session’ and more

SERIES

Supergirl Kara, Mon-El and Alura (Melissa Benoist, Chris Wood and Erica Durance) are determined to put a stop to Serena’s (guest star Anjali Jay) villainous plans in a new episode of the superhero drama. 8 p.m. KTLA

So You Think You Can Dance Stephen “tWitch” Boss remains on hand as a guest judge to help Vanessa Hudgens, Nigel Lythgoe and Mary Murphy assess the would-be contestants as the auditions continue in Los Angeles. 8 p.m. Fox

Disney’s Fairy Tale Weddings This six-part series follows couples who have chosen to get hitched at one of the company’s theme parks. 8 p.m. Freeform

The Price of Duty Detectives speak candidly about the personal toll of working tough cases in this new true-crime series. 8 p.m. Oxygen

Whose Line Is It Anyway? Andrea Navedo (“Jane the Virgin”) joins the fun in this new episode of the improv-comedy sketch show. 9 p.m. KTLA

Dietland Plum (Joy Nash) suffers from withdrawal while Jennifer (Sandra W. Lee) goes on a rampage in this new episode of the drama. Julianna Margulies also stars. 9 p.m. AMC

Best Baker in America The four remaining bakers compete for the final three spots in this new episode. 9 p.m. Food Network

People Magazine Investigates: Cults A new installment recalls the 1975 Jonestown Massacre in Guyana. 9 p.m. Investigation Discovery

Drain the Oceans The new episode “Lost Worlds of the Mediterranean” explores the rise and fall of the Minoan, Greek, Carthaginian and Roman civilizations. 9 p.m. National Geographic Channel

Who Do You Think You Are? Former “Saturday Night Live” cast member Molly Shannon journeys to Ireland on a new episode of the celebrity genealogy series. 9 p.m. TLC

Man v. Food Host Casey Webb visits Savannah, then San Diego, in back-to-back episodes. 9 and 9:30 p.m. Travel Channel

Elementary Holmes and Watson (Jonny Lee Miller, Lucy Liu) track a serial killer following the death of someone close to them in a new episode of the detective drama. 10 p.m. CBS

Independent Lens The encore documentary “Forever Pure” looks at the controversy that was generated when two Muslim players joined Israel’s top soccer team. 10 p.m. KOCE

SPECIALS

David Cassidy: The Last Session The former teen heartthrob and costar of the musical 1970s sitcom “The Partridge Family” is seen and heard in this special that combines archival film with more recent footage for a four-part docu-series he’d started shooting before his death in 2017. 9 p.m. A&E

TALK SHOWS

CBS This Morning Author Jesse Itzler. (N) 7 a.m. KCBS

Today Chris Pratt and Jeff Goldblum; dancer Derek Hough. (N) 7 a.m. KNBC

KTLA Morning News (N) 7 a.m. KTLA

Good Morning America (N) 7 a.m. KABC

Good Day L.A. Stephen “tWitch” Boss and Allison Holker (“So You Think You Can Dance”); Winnie Sun (“The Wealth Whisperer”); Judge Lynn Toler (“Divorce Court”). (N) 7 a.m. KTTV

Megyn Kelly Today (N) 9 a.m. KNBC

Live With Kelly and Ryan Holly Hunter; Leslie Bibb; Melissa Benoist performs. (N) 9 a.m. KABC

The View Christopher Plummer. (N) 10 a.m. KABC

Steve Penn & Teller (“Fool Us”); Kevin O’Leary (“Shark Tank”). (N) 2 p.m. KNBC

The Ellen DeGeneres Show Howie Mandel (“America’s Got Talent”); Shaquille O’Neal (“Uncle Drew”); Oprah Winfrey. (N) 3 p.m. KNBC

Amanpour on PBS (N) 11 p.m. KVCR

The Daily Show With Trevor Noah (N) 11 p.m. Comedy Central

Conan Amanda Peet; MMA fighter Daniel Cormier. (N) 11 p.m. TBS

Amanpour on PBS (N) 11:30 p.m. KOCE

The Tonight Show Starring Jimmy Fallon Jim Parsons; Marlon Wayans; the Smashing Pumpkins perform. (N) 11:34 p.m. KNBC

The Late Late Show With James Corden Actress Hilary Duff; the Jaded Hearts Club performs. (N) 12:37 a.m. KCBS

Late Night With Seth Meyers Jake Tapper; Jane Krakowski; Devin Dawson performs; Brian Frasier-Moore performs. (N) 12:37 a.m. KNBC

SPORTS

Baseball The Angels visit the Seattle Mariners. 7 p.m. FSN

For more sports on TV, see the Sports section.