There's something sinister about Drumdalloch Woods in the Black Isle near Inverness. It is a place of tangled growth and shadowy darkness, it has business opportunists, biological scientists and conflicted family members all competing for a say in its future. Then a body is found, and everything starts to look suspicious. As DCI Kelso Strang's investigation grows more complex, he unearths layers of hatred, greed and revenge that cast doubt even on the local police force. Having only just found happiness with his new girlfriend, Cat Fleming, Strang faces an existential threat not only to his career but to his very life.