From the Community:

On the industrial world of Garranox, crazed doomsday cults stalk the shadows and create an atmosphere of palpable dread. Deep beneath the city of Saint Meryn’s Heart lies a dark power, and the Night Lords have released a Murderwing into this crucible of terror to hunt and butcher its inhabitants as they attempt to find the source of this malefic energy. Standing against them are the witch-hunting Celestian Insidiants, Adepta Sororitas dedicated to the destruction of psykers, who use their talents to follow the trail of the Night Lords.

Kill Team: Shadowhunt plunges you into this whirling melee of murder and faith, providing you with two full kill teams and an 88-page Shadowhunt Dossier. This volume contains rules for the Descent killzone, which lets you divide your battlefields into upper and lower layers, plus Joint Ops and Adversary Ops Shadowhunt mission packs with rules for new co-op and competitive games. The box also includes upper and lower Descent killzone game boards for use in the new mission packs, Adepta Sororitas and Chaos Space Marines transfer sheets, plus all the datacards and tokens you need to play both new teams.