The Blacklist

NBC | 8:00 pm

Season 7 opens not long after the jaw-dropping climax of the Season 6 finale, when Red (James Spader) was taken by surprise by Katarina Rostova (Laila Robins), who stabbed Red with a syringe, then kidnapped him. As most fans recall, Katarina is, in fact, the previously-presumed-dead mother of Liz (Megan Boone), who hasn't laid eyes on her mom since childhood. Series creator Jon Bokenkamp calls Katarina "the most formidable Big Bad we've ever introduced," adding that the character will loom large in the new season.