2012
S06E07 finale
When the crew of the Kishorn Bravo oil rig, stationed off the Scottish coast, is due to return to the mainland, a mysterious and all-enveloping fog rolls through and they find themselves cut off from all communication with the outside world. As the rig is hit by massive tremors, the crew endeavor to discover what's driving the unknown force. But a major accident forces them to ask questions about who they can really trust.
When the Kinloch Bravo's crew find themselves stranded on their production platform, first when their chopper is diverted and then by a mysterious fog that affects the entire oil field, rig boss Magnus' attempts to find a practical solution are thwarted by a horrifying accident and a growing sense of unease onboard.