A pair of stars have joined Scandal for season 4.

News of their casting surfaced over the past few days. First, Matthew Del Negro (Mistresses, Teen Wolf) is slated for a “recurring” role, according to Entertainment Weekly. While we don’t know anything more about his character, one can guess from his good looks that he may be a love interest to someone.

In addition, Lost and Parenthood alum Sonya Walger has been cast in a “potentially recurring” role, according to TV Line. We don’t know anything about the character she’ll play, either.

Other actors and actresses joining Scandal season 4 include Portia de Rossi, Mary McCormack, and Josh Randall. And yep – you guessed it – their roles are mysteries too!

Scandal season 4 premieres Thursday, September 25 at 9 p.m. eastern/pacific on ABC. It’ll be sandwiched between two other Shonda Rhimes shows: Grey’s Anatomy (at 8 p.m.) and the new drama How to Get Away with Murder (10 p.m.).