Grey Sister - Mark Lawrence

Grey Sister is the second novel in the Book of the Ancestor trilogy.

Very highly recommended.

Black Nowhere - Reece Hirsch

Black Nowhere is the first novel in the Lisa Tanchik series.

Very highly recommended.

Red Sister - Mark Lawrence

Red Sister is the first novel in the Book of the Ancestor series.

Very highly recommended.

Assassin's Run - Ward Larsen

Assassin's Run is the fifth novel in the David Slaton series.

Very highly recommended.