Seeds of Immortality. Demon Gate Chronicles, #3

Can Ryan and Salina put aside their differences long enough to save humanity? As the demon lords escalate their insidious campaign for global dominion, Ryan Chamberlain, commander of the Templars, recognizes the urgent need for an unprecedented alliance between the Templars and Arcanists. Yet, erasing centuries of animosity proves to be no simple feat. In a bid to forge a path from adversaries to comrades, Ryan reluctantly joins forces with Salina Fry, an exceptionally gifted Arcanist.
However, a single harrowing mission suffices to convince him that the captivating sorceress may be his undoing. As the war intensifies and demonic forces ascend to power. Humanity most desperately requires the intervention of Earth's gods. Yet, Gaia and the enigmatic High Lord have vanished, taking with them the mystical powers they bestowed upon their faithful. In this bleak hour, the Seeds of Immortality remain the final hope. Will Salina's distrust shatter their partnership? In a world of danger and intrigue, can Ryan break through her defenses? Enter a realm where trust hangs in the balance in the third book of the  Demon Gate Chronicles.