Lost on the Norfolk Broads: A gripping British crime mystery

A cold winter's day by the River Bure. DCI Greg Geldard is waiting for DS Chris Mathews to respond to his proposal of marriage - when her phone rings.

It's the Chief Superintendent. One of Norfolk Police's protected witnesses has come within an inch of being killed. Someone leaked his location . . . someone inside the force.

But Geldard's troubles are only beginning.

In Great Yarmouth, a terraced house erupts in flames. Inside, firefighters find a woman's body padlocked inside a cupboard. Her ...