John is on the trail of fugitive Larry Hicks, accused of murdering a devoted mother of two in Plattsburgh, N.Y.; Callahan heads to Texas to shine the white-hot spotlight on accused predator Steven Leifeste.

In pursuit of Dylan Harrington, John takes on a bone-chilling murder case in remote Washington State.

John joins law enforcement in pursuit of Luis Montes, accused of murdering his on-again-off-again girlfriend in Texas; Callahan heads to Chicago to shine a light on two victims of gun violence whose cases remain unsolved.

After the murder of a beloved family man in Florida, John profiles the mysterious accused killer, John Galvao-Sahb; Callahan heads to Los Angeles to help police with a twisted case of child sexual abuse allegedly perpetrated by Dublas Gonzalez.

John joins the hunt for Jovanny Romo Arellanes, who California police say killed his ex-girlfriend; Callahan seeks answers for a family that never gave up hope surrounding a mysterious case involving alleged killer Steven Oboite.

John takes on accused financial fraudster Ruja Ignatova, whose alleged crypto con landed her on the FBI's top ten most wanted list; Callahan heads to Pennsylvania on the trail of Freddy Calle, accused of sexually abusing a teenage girl.