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?

Martha and the team investigate a missing person’s case after a father stages a dramatic protest to persuade the army to search for his AWOL son. Recently returned from a tour of duty in Afghanistan, the young soldier had been out drinking with three of his army pals the night he disappeared

The detectives reopen a cold case when a person involved in that crime dies in a brutal copycat murder. Believing it might be a revenge killing, the detectives bring in the first victim’s sister for questioning.