1996, London. The Troubles are in full flow. A young Irish officer, Ronan Frost, is deep undercover inside an IRA cell in London. Something big is happening. Something devastating. Something that will shake the foundations of Anglo-Irish relations and make sure the peace process stalls.

The Ogmios Team doesn't exist.

Sir Charles is not confined to a wheelchair.

This is where it all begins.

With a betrayal.