Chapter War : Soul Drinkers, Bk. 4 (Warhammer 40,000)

Having stabilised their gene-seed, and brought a halt to their mutation, the Soul Drinkers start rebuilding their Chapter with new recruits. But the recruits have their own ideas ? rather than protect the Imperium, they wish to wage war against it. With the Imperial forces and the Inquisition closing in on the renegade Chapter, can Sarpedon rally his troops to face the true enemy?