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First broadcast at 20:05 13 Aug 2011
The team must stop a teenage student from detonating a bomb attached to his body and get the other students who have been taken hostage to safety.
The body of a missing marine is found in a frozen lake along with three other corpses.
A set of marine dog tags are found in a forest where a killer may be at large.
Investigating agents uncovers shocking evidence when an ambulance transporting a dead marine explodes.
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Channel 5 Broadcasting Ltd. 2015