"Our investigative duo--pragmatic, meticulous and newly promoted Commander Elise Wasserman, and laconic but brilliant DCI Karl Roebuck--reunite to investigate the case of a French couple abducted from the Eurotunnel, leaving behind their traumatized daughter, Chloe Fournier. But the case is complicated when a plane carrying British and French passengers crashes into the Channel killing everyone on board"--pbs.org.