New from Ken Burns is a two-night, four-hour documentary “Hiding in Plain Sight: Youth Mental Illness” (PBS, 9 p.m., check local listings) about the crisis among American youth, with nearly two dozen first person accounts of struggles. It concludes Tuesday.

Nicola Walker and Stephen Mangan star in the new drama “The Split” (BBC America, 10 p.m.) about a divorce lawyer who has her own dissolution. 

Here’s a bad idea: The 2004 reality show “College Hill,” about students at Historically Black Colleges and Universities returns except with a cast that includes Nene Leakes, Ray J, Lamar Odom and Big Freedia on “College Hill: Celebrity Edition” (BET+, streaming). 

On the new series “Martin Clunes: Islands of the Pacific” (Acorn TV, streaming), the star of “Doc Martin” goes on an ocean adventure.

First round play begins at Wimbledon (ESPN, 6 a.m.).

On “Mind Over Murder” (HBO, 10 p.m.), the 1985 death in Beatrice, Neb., having turned cold by 1989, takes a turn. 

The director is visited by his ex on “Irma Vep” (HBO, 9 p.m.), but perhaps it’s all a dream. 

“Weakest Link” (NBC, 10 p.m.) has its season finale. Other game shows today include “Don’t Forget the Lyrics” (Fox, 8 p.m.) and “Beat Shazam” (Fox, 9 p.m.). 

Qualifying rounds continue for “American Ninja Warrior” (NBC, 8 p.m.).