Lisseth Chavez joined "The Rookie" as Celina Juarez ... further demonstrating her versatility as an actress. Alyssa Diaz has been a cornerstone of "The Rookie" since the beginning, playing ...

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.