The Rookie Cast Reacts to Viral TikTok Fame 🎥

The cast of 'The Rookie' chats with ET's Deidre Behar about the viral success surrounding their behind-the-scenes TikTok posts. Nathan Fillion, Jenna Dewan, Lisseth Chavez, Eric Winters, Melissa O'Neil, Shawn Ashmore, Alyssa Diaz, Mekia Cox and Richard T. Jones break down how and who started their trending social media videos. The co-stars also share the backstory of Lisseth's 'chicken dance' prank. Season 7 of 'The Rookie' premieres Jan. 7 on ABC.