Level Six (Killday)

Fifteen years after warring artificial intelligences nearly destroyed Earth, Abby, the daughter of Killday hero Leah Gibson, finds an artifact from that struggle, upsetting a delicate balance of power and dragging her into the middle of a new fight for humanity's survival.

One AI faction is working with humanity to repair a biosphere teetering on the edge of collapse, while another faction cares only about elevating itself to a higher plane of intelligence and will destroy anyone who gets in...