Simone MIssick as Judge Lola Carmichael, an idealistic former prosecutor and newly appointed Judge of the Los Angeles County Superior Court.
Wilson Bethel as Deputy District Attorney Mark Callan, a member of the Los Angeles County District Attorney's Office and best friend of Lola Carmichael.
Jessica Camacho as Emily Lopez (formerly Emily Lopez-Batista), a member of the Los Angeles County Public Defender's office who is in the process of divorcing her husband against whom she has a restraining order.
J. Alex Brinson as Deputy Sheriff Luke Watkins, a four-year veteran bailiff who plans to leave the Los Angeles County Sheriff's Department and become a lawyer upon the completion of his law degree.
Ruthie Ann Miles as Sherri Kansky, an experienced judge's assistant assigned to new Judge Lola Carmichael despite their difficult relationship.
Lindsay Mendez as Sara Castillo, a court reporter and friend of Emily Lopez.
Marg Helgenberger as Judge Lisa Benner, a veteran/supervisory judge in the HOJ who is a mentor to Lola Carmichael.