CBS | 9:00 pm

As Maggie, OA (Missy Peregrym, Zeeko Zaki) and the rest of the team search for killers who orchestrated a mass shooting at a media company, the FBI agents welcome a new colleague, Special Agent Tiffany Wallace (new series regular Katherine Renee Turner), in the Season 3 premiere, "Never Trust a Stranger." Meanwhile, OA has a personal connection to the case that may well cloud his judgment. Josh Segarra, Vedette Lim and Taylor Anthony Miller guest star; Alana De La Garza and Jeremy Sisto also star.