WHAT TO WATCH
The Chelsea Detective
Acorn TV • Season Finale
The new British mystery series concludes its first season with “A Chelsea Education.” At first glance, Oliver Cowie – devoted family man, respected educator and all-around good guy – seems an unlikely murder victim, until he’s found in a pool of blood, bludgeoned to death in his study. But scratch the surface and it turns out there’s no shortage of suspects, ranging from his own wife to feuding colleagues, a vengeful ex-pupil, disgruntled parents and a rather too-familiar family cleaner.
All American
The CW, 8 p.m.
After weeks of hard work at practice and the first game quickly approaching, Spencer (Daniel Ezra) has high hopes of playing in his first college game. Asher (Cody Christian) and Layla (Greta Onieogou) have epiphanies about their respective relationships and realize they need to deal with it. Coop (Bre-z) and Patience (Chelsea Tavares) finally speak their truths, leaving them in unknown territory. Meanwhile, Olivia (Samantha Logan) learns an important lesson as she slowly tries to work her way up the ladder at the paper.
9-1-1
FOX, 8 p.m.
In the new episode “Boston,” Chimney (Kenneth Choi) is determined to find Maddie (Jennifer Love Hewitt), who has gone missing in the chaos of St. Patrick’s Day.
Antiques Roadshow
PBS, 8 p.m. (WTTW Chicago, 8 p.m.) Check out amazing objects that exude a celebratory spirit, including an Alexander Calder mobile, Tiffany iridescent vases and a 1955 Picasso Madoura plate. Can you guess which has an updated appraisal value of between $800,000 and $2 million?
NCIS
CBS, 9 p.m.
NCIS and NCIS: Hawai’i have a crossover
event tonight, beginning with the new NCIS episode “Starting Over.” The NCIS team investigates the apparent suicide of a retired Navy officer, and Torres (Wilmer Valderrama) gets a request from NCIS Special Agent Jane Tennant (guest star Vanessa Lachey) to come to Hawai’i after she gets a lead on a case they worked on together.
Snowpiercer
TNT, 9 p.m. • Season Finale
In the Season 3 finale “The Original Sinners,” it all comes to a head as old adversaries clash, with New Eden hanging in the balance. The series has been renewed for a fourth season.
I Was There
History, 10 p.m.
Theo E.J. Wilson time-travels to 1865 and immerses himself in the events that lead John Wilkes Booth to hatch a plan to kill President Abraham Lincoln. Wilson uncovers a series of surprising moments, from a sibling rivalry to Booth’s first encounter with Lincoln, which sharpened Booth’s hatred for the president and led him to murder Lincoln just when the United States needed the 16th president most. Featuring insights from leading historians.
The Endgame
NBC, 10 p.m.
An inmate on a quest for redemption escapes prison. Meanwhile, Doak (Noah Bean) comes up with a plan to take back one of the banks.