On the vast Buchanan Estate in the wilds of Scotland, tech billionaire James Sullivan dies a suspicious death. Rookie agent RJ Rox is drawn back to a homeland to which shed sworn shed never return. She soon realizes the present is far more threatening than her past as she hunts the killers and the powers that unleashed them. The close-knit community surrounding the estate is the perfect place to hide secrets and lies. RJ finds herself searching for the weakest link that will allow her access into Buchanan's sinister world. Thrown together with a partner who clearly hates her makes RJ even more determined to prove herself to the elusive Kingfisher organization. Remote, desolate, and beautiful, the hills hide a killer lying in wait. Can RJ close the case before anyone else is subject to the same fate as Sullivan? Before she is hunted herself?