Smiley Face Killers: The Hunt for Justice (7 p.m., Oxygen) - This new true-crime series follows a bizarre cluster of unsolved crimes involving hundreds of college-aged men over the past 20 years found to have mysteriously drowned. The victims are all pretty similar, and near where nearly all of the bodies were found, there has also been found a graffiti of a smiley face. Many of the victims had defensive wounds or were drugged, but local authorities often classified the deaths — which show up in clusters across the country — as undetermined or accidental. This series follows a retired NYPD detective and a team of investigators who have dedicated the past 12 years to these cases. Their goal is to get the cases reopened by local authorities and bring answers to grieving families.
Escaping the Madhouse: The Nellie Bly Story (8 p.m., Lifetime) - This new original Lifetime movie stars Christina Ricci as the 19th century pioneering journalist Nellie Bly (her real name was Elizabeth Cochran Seaman), who feigned mental illness and went undercover at the Women’s Lunatic Asylum on New York’s Blackwell Island in an effort to expose the horrible conditions and mistreatment of patients there. The movie is described by Lifetime as “intense and fictionalized account” of the events. Judith Light stars as the head nurse who tortured patients into submission.
Winter Love Story (8 p.m., Hallmark) - In the latest Hallmark Winterfest movie, an author’s first novel isn’t selling, so she’s paired on a book tour with a more successful author to boost her sales. Spoiler: they fall in love.
Pit Bulls and Parolees (9 p.m., Animal Planet) - Season 10 starts with two teachers from Massachusetts who fall in love with a deaf puppy they hope to adopt. Also, a house fire reveals a massive dog-hoarding situation.
Saturday Night Live (11:30 p.m., NBC) - Rachel Brosnahan of “The Marvelous Mrs. Maisel” hosts, and Greta Van Fleet performs.
Some programming descriptions are provided by networks.