The Sentence (8 p.m., HBO) — Documentary filmmaker Rudy Valdez shows the aftermath of his sister Cindy Shank’s 15-year sentence for conspiracy charges related to crimes committed by her deceased ex-boyfriend — something known in legal circles as “the girlfriend problem.” Valdez films his sister’s family for her (including her three daughters), recording the moments she can no longer share in, and eventually becomes an activist fighting for her release. This film was the winner of the Sundance 2018 Audience Award for Best U.S. Documentary.
Arrow (8 p.m., The CW) - In the Season 7 premiere, Oliver is determined to keep a low profile to shorten his sentence at Slabside Maximum Security Prison.
Unmasked (10 p.m., Investigation Discovery) - The debut episode of this new true crime series takes on the 1990 murder of Marlene Warren by a killer clown in South Florida.
God Knows Where I Am (10 p.m., PBS / UNC-TV) - This documentary explores the issues of mental illness and
homelessness through the story of Linda Bishop, a well-educated mother with severe bipolar disorder who was found dead in an abandoned home in New Hampshire in 2008. The documentary traces the events leading up to Bishop’s hospitalization and the final months of her life after her discharge.