Calgar’s Fury is Paul Kearney’s third novel for Black Library, after the ill-fated Dark Hunters: Umbra Sumus and 2016’s Calgar’s Siege, and sees him return to the character of Marneus Calgar that he tackled so well previously. When a vast space hulk appears within the bounds of Ultramar, inexperienced Captain Galenus of Fifth Company is called to investigate, but the threat is enough for Calgar to step in himself, alongside the Inquisition and Adeptus Mechanicus. Leading two full companies onto the hulk to try and divine its secrets, he soon finds himself caught between two enemies, even while his allies pursue their own agendas.