A teenage girl from the same school Lt. Mason's daughter Simone attends is murdered in a field near the school. Detectives Stone and Washington initially pursue a registered sex offender who flees when they approach the nearby construction site where he is working. Simone ends up giving a number of clues assisting Detectives Fitch and Sanchez in their investigation. Longford and Mahajan investigate the late night murder of a defense attorney's son in the kitchen of a Greek restaurant. Fingerprints on a bible left at the scene lead to a woman at a church. After she pulls a gun on them Sgt Langford realizes that she has a sudden, profound fear of the police and negotiates a calm resolution to the standoff by reciting part of 1 Corinthians 13. The suspect, Zoe, later reveals that she witnessed the murder of her boyfriend and that the shooter was wearing a police uniform.