Elise Wasserman and Karl Roebuck investigate when a couple are abducted from the Channel Tunnel in front of their young daughter. Events take a dramatic turn when a plane crashes into the Channel.

As the investigation continues and terrorists plan a further attack in France, a man comes forward with links to Robert. Elise uncovers disturbing facts about Eryka's past and Karl follows a hunch.

Karl and Elise receive a tip-off from a woman they believe knows Robert Fournier's whereabouts. But can she be trusted?

An unexpected revelation threatens to turn Karl's life upside-down. Meanwhile, Eryka reaches out to Elise and Rosa offers the team a cryptic clue.

An anonymous package gives Karl his biggest breakthrough in the case yet. Plus, the investigating team receive a clear and violent warning.

The team are forced to strike a deal with Vanessa. Meanwhile, someone tries to warn Karl off the case and Elise crosses a line she may quickly come to regret.

A lethal attack is launched and Elise and Karl's lives are thrown into jeopardy as the second series of the gripping crime drama ends in a nail-biting showdown.