Saturday Night Live Sam Rockwell (“Three Billboards Outside Ebbing, Missouri”) hosts the first new episode of 2018. The musical guest is Halsey, who has had hits on the charts in recent weeks with “Bad at Love” and “Him & I.” 8:29 and 11:29 p.m. NBC
The Vet Life Dr. Blue opens the Houston clinic after Hurricane Harvey poured 30-plus inches of rain on the city in this special new episode. 10 p.m. Animal Planet
Falling Water Tess (Lizzie Brochere) bravely faces off against a dangerous intruder, while Burton (David Ajala) has an unsettling encounter with a ghost from his past in this new...