On today's What to Watch: NCIS, NCIS: Hawai'i, and NCIS: Los Angeles return for their winter premiere with a huge three-episode crossover that finds the teams trying to figure out who killed a beloved professor — and it puts them in the killer's crosshairs. The new Fox drama Alert: Missing Persons Unit, starring Dania Ramirez as Officer Nikki Batista, follows a life or death missing person situation, starting with Batista's son. Jemaine Clement, Hugh Jackman, and Sarah Snook star in the new animated series Koala Man, about a dad who moonlights as a masked vigilante Koala Man. Plus, Hollywood trivia, This Week in Entertainment History, and entertainment headlines, including M3GAN's better-than-expected box office debut, Paul Mescal's potential new role in a Gladiator sequel, AMC cancels 61st Street, and Eight Is Enough star Adam Rich's death. More at ew.com, ew.com/wtw, and @EW on Twitter and @EntertainmentWeekly everywhere else. Host/Writer/Producer: Gerrad Hall (@gerradhall); Producer: Ashley Boucher (@ashleybreports); Editor: Samee Junio (@it_your_sam); Executive Producer: Chanelle Johnson (@chanelleberlin).
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