Netflix’s upcoming political thriller series Trinity stars Gugu Mbatha-RAW as Commander Katherine Decker, a naval officer drawn into a dangerous investigation, and Richard Madden as Secretary of Defense Webb Preston. The series is set to release on Tuesday, December 1.

The trailer begins with a submarine coming close to the wrongful deployment of a nuclear weapon. Decker and Preston then work to protect her crew and uncover a threat to the country. As the investigation unfolds, Decker suspects the seemingly charismatic defense secretary may be concealing something more sinister.

Trinity was created by Jed Mercurio, who also serves as showrunner, writer and executive producer. The cast includes Marcia Gay Harden, JD Pardo, Bruce Greenwood, Robert Wisdom, Kirk Acevedo, Ben Cotton, James Remar, Jason Ralph and Mark O’Brien.

Sources: TVLine.