James Swallow
Sisters of Battle: the Omnibus

Adepta Sororitas Sister Miriya and her comrades hunt renegade psykers, battle the ancient might of the necrons and investigate a world newly discovered by the Imperium in three tales of the Sisters of Battle by James Swallow.
Warhammer 40k
omnibus

It contains:
Faith & Fire
Red & Black
Heart & Soul
Hammer & Anvil