After standing witness to a murder on the streets of the Caribbean island of Camaho, young Michael 'Digger' Digson is recruited into a unique plain clothes homicide squad, an eclectic group of semi-official police officers, led by the enigmatic DS Chilman.

Digger becomes enmeshed in Chilman's obsession with a cold case, the disappearance of a young man. But Digger has a murder to pursue too: that of his mother, killed by a renegade police squad when he was a boy.

He has two weapons at his disposal - his skill in forensics, and Chilman's latest recruit, the mysterious, observant Miss Stanislaus. Together, the two find themselves dragged into a world of dangerous secrets that demands every ounce of their courage to survive.