Holmes and Watson's investigation into the murder of a religion professor puts them on the hunt for a killer connected to the occult. Also, Holmes and Watson curate a list of potential replacements for Detective Bell when it looks likely the officer will be asked to join the U.S. Marshal Service.
Abe and Harper travel to Afghanistan to investigate when an Afghan commander is killed on a U.S. base. When a Marine is accused of the crime, Trey and Maya join their colleagues to defend him in an on-base hearing. Also, Col. Turnbull and her husband, Asa (Cotter Smith), disagree about how to handle their son Adam's (Derek Klena) physical therapy.
Abe's colleagues must defend - and reluctantly prosecute - him when he is arrested and court-martialed for mutiny in regard to a 2010 mission in Afghanistan where he was one of the only survivors.
