After witnessing a mob hit in the series premiere episode, Thony cleans the crime scene to stay alive, then begins a double life – cleaning for the mob while doing what is necessary to save her son.
The BAU investigates when several young men and women are victims of disfiguring acid attacks. Also, Dr. Reid begins to settle into his new surroundings.
A mother steps forward with valuable information for the BAU to aid in their investigation of an unsub known as the bone crusher. Also, Reid must adapt to a new set of rules in prison life. Tatum O'Neal guest stars.
The BAU believes two unsubs may be operating at the same time, when victims killed in two drastically different ways are discovered in the same city. Also, the team grapples with keeping Reid safe in prison.
Still reeling from the death of his informant Anna, Voight faces a new threat as he tries to keep the neighborhood clean.
