Family Liaison Officer Lisa Armstrong becomes a little too emotionally involved with a case (to the point where she might compromise it) concerning a pair of missing Morecambe twins to whose distraught parents she is assigned.

After his daughter goes missing, a widower begins uncovering the dark secrets of the people closest to him.

Drama series set in the mid-sixties, in which a unit of Royal Military Police officers and their families deal with the challenges of politics, love and war in British-controlled Aden.