When an environmental scientist, Dr. Oscar Silva (Elliot Villar), is poisoned during a global warming symposium, Detectives Bernard and Lupo initially suspect competitors from Dr. Silva's field of study. It is soon discovered that Dr. Silva is involved in a messy custody battle with his wife's (Tammy Blanchard) ex-husband, Phillip Shoemaker (Tony Hale), and the focus of the investigation quickly shifts to the victim's family. Meanwhile, the case becomes personal for EADA Cutter as it stirs up unpleasant memories from his own past.