Police: Suspect No.1

In Kent, two men drag a man riding a moped to the ground and launch a frenzied knife attack before fleeing the scene, leaving the victim with 13 stab wounds. Officers begin the hunt for the attackers, with details of the getaway car being circulated and its movements are traced. Just 90 minutes after the assault, armed response officers stop the vehicle and the occupants are detained, but no weapon is recovered, and the knife used in the attack remains missing. Can the team gather enough evidence or will they face the prospect of being unable to bring charges?