Trevor Eve plays Dominic King, an international hostage release negotiator and a damn good one at that.  A veteran in the field, he regards his job as a calculated game of chess, but like all maverick heroes, King is haunted.  His failure to rescue a hostage from a ruthless gang dented his spirit yet strengthened his resolve to save a kidnapped British botanist working in South Africa.  Helen Baxendale also reprises her role as Angela Beddoes, King's business partner.