Hell and High Water - S4.E5

The Bugs team are called in to investiagte why the crew on board the Searanger, an oil rig, have suddenly gone silent. After investigation, they discover that the team they are with on the oil rig are not the really crew, and they work with the last surviving member, Paul Grey, to stop a satellite falling onto the Earth. Ros finds beckett unconscious in a room, and they are forced to work closely when they are left to do, betrayed by Paul Grey.