Major Aaron Willis and his SF squad land on the remote moon R543, a privately owned world operated by the Kelen & Son industries, to investigate some serious charges of corporate corruption. What awaits them there is an enemy more sinister and dangerous than even the famous 'Raven' could ever have anticipated.

As dark secrets and past mistakes start to surface Aaron and his soldiers face a battle for their very survival light years away from Earth. Under these extreme circumstances most men will buckle under the pressure or simply fail to realize their objectives. But decorated war hero Milos Yankovich will see this mission as his only lifeline; a crude way to escape from the demons living inside his head and a civilian life that never really agreed with him.

This is the fourth volume in the Final Colony series.