The Killing Grounds, by Jack Ford, Read by Robert G. Slade by HarperAudio

Ex-US Navy-turned-investigator Thomas J. Cooper is tortured by the past.

A deadly fight with Somali pirates and a tragic accident at sea have left him struggling with PTSD and an addiction to prescription drugs.

When he and his colleague Maddie return to the Democratic Republic of Congo to investigate the mysterious disappearance of a plane, what they find is far more sinister and dangerous…