Suspects

College art teacher Abigail Lincoln is found on campus with a deadly injury. As doctors try to save her life, Martha and the team look into the man who found her, who has a previous conviction and had been harassing Abigail because of her sexual orientation.

When missing person Sian Jenkins is pulled from the Thames unconscious and suffering from severe burns and vitamin D deficiency, the detectives believe she was being held captive. Then another missing girl’s DNA is discovered under Sian’s fingernails.

When a Molotov cocktail lights his family’s home ablaze, young teen Asif Khan is critically injured. The detectives investigate Gregor Forrester after Asif’s father accuses the shady businessman of the attack.

When teenager Mandy Granger goes missing and another young girl’s body is found, Martha, Jack, and Charlie believe the two cases may be connected. Can they identify the victim and find the killer in time to save Mandy?