On today's What to Watch: Vikings: Valhalla returns for an action-packed second season on Netflix, Criminal Minds: Evolution's midseason premiere picks up after an explosion threatens the lives of the team, and Alan Cummings hosts the deceit-filled reality competition The Traitors featuring some reality TV favorites as the contestants. Plus, Hollywood trivia, and entertainment headlines, including the SAG Award nominations, Simon Pegg's new role in the Harry Potter video game, a new Jeopardy! Masters tournament, and the death of guitar legend Jeff Beck. More at ew.com, ew.com/wtw, and @EW on Twitter and @EntertainmentWeekly everywhere else. Host/Producer: Gerrad Hall (@gerradhall); Producer: Ashley Boucher (@ashleybreports); Editor: Samee Junio (@it_your_sam); Writer: Calie Schepp; Executive Producer: Chanelle Johnson (@chanelleberlin).
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