She Lies in Wait

She Lies in Wait by Gytha Lodge starts thirty years ago when a terrible crime occurred while a group of six friends went camping. No bones have been unearthed and it falls to DCI Sheens, who was a young cop when a girl went missing, to determine the truth. An exhaustive investigation failed to turn up the missing girl but modern analytic techniques may offer an advantage. it's a clever, detailed police procedural turning on who was lying then and who is lying now.