Deep Down - S1.E14

While retrieving an object from a plane that crashed into a lake a female diver, Robin Morley, is lost as a tremor strikes. The plane belonged to one of Banning's corporations and Byder tells Ethaniel that there must be something important on board if he wants it back. Ethaniel and Laura head of to the lake to help look for Robin and to find out what was onboard the plane that Banning is so eager to recover.