SAS: Red Notice

Tom Buckingham (Sam Heughan), an off-duty SAS soldier, is a passenger on a train running through the Channel Tunnel when a terror attack begins. Magnus Martens keeps most of the action inside the narrow carriages, while back above ground, officials in the corridors of power make decisions that reach the train. Buckingham and the civilians around him have only as long as the tunnel lasts to get out alive.