Grailstone Gambit (Outlanders Series #44) Book

DEFIANT AGGRESSORS

The alien blueprint to claim Earth dates back to eons before humanity became enslaved. Fires of human rebellion have only strengthened the bid to fully secure the chains of iron rule. But the battle that spans time and space has become a proving ground. A bold, sophisticated band of insrugents has understanding of the enemy's darkest secrets, and dares to loosen the choke hold of power on the planet....

MISTS OF DOOM

Across mystical Celtic lands, a devious enemy has resurfaced, adopting the guise of Merline, new messiah of the Druidic religion. Ushering in a new age of magic, terror and human sacrifice, the interloper once called Lord Strongbow seeks an ancient relic that will resurrect the dead. To rescue a culture from barbarism, the Cerberus warriors stand with a warrior queen in a final challenge to turn the tide of ancient madness that threatens to engulf the entire world.