Detectives Ray Paterson and Johnny Clocks attend the scene of a brutal murder on the banks of the River Thames.

Someone’s head is found with a star carved into their forehead. The rest of their body is buried in the mud.

The next day the airwaves are hacked. A live-stream shows a man imprisoned in a box. He also has a star cut into his head.

Then the man is drowned alive in the box.

TWO MORE MEN ARE MURDERED ON LIVE TV, TWO MORE WILL DIE WITHIN HOURS.

Paterson and Clocks race against time to make sure their next breath isn’t their last.

But this enemy is far more deceptive and deadly than any they've encountered before.

THEY WILL DO ANYTHING FOR REVENGE. WHY?