CBS Films and Lionsgate announced today that Khandi Alexander (“Scandal,” “Treme”), Melissa Benoist (“Supergirl”),  and Jake Picking (“The Way Way Back”) have joined Mark Wahlberg, John Goodman, J.K. Simmons, Michelle Monaghan, Kevin Bacon, Michael Beach, Jimmy O. Yang, Vincent Curatola, Alex Wolff, James Colby, Themo Melikidze, Rachel Brosnahan and Christopher O’Shea in “Patriots Day.”

The film, which chronicles the events surrounding the 2013 Boston Marathon Bombing, is being directed by Peter Berg and produced by Scott Stuber, Mark Wahlberg, Hutch Parker, Dylan Clark, Stephen Levinson, Dorothy Aufiero and Michael Radutzky.

Khandi Alexander has signed up to play a law enforcement interrogator.