A teenage girl may have been lured to her death with a few keystrokes on a smartphone APP. With a few swipes of her smartphone, the teen became a victim of the occasionally dangerous world of anonymous online friending.
When Holmes' former recovery sponsor and friend, Alfredo, disappears, Holmes and Watson retrace his steps as Captain Gregson and Detective Bell lend NYPD's resources to help find him. Holmes wonders if his friend is a victim of foul play or worse.
In the aftermath of a deadly mine explosion, the team infiltrates the coal mines of West Virginia to put an end to the dangerous practices of the mine's owner. What the team digs up threatens the tight-knit community.