Darkness on Fire — Alexis Morgan

An original eBook, this final installment in the sexy paranormal romance series features the Paladins, immortal warriors who willingly die repeatedly in an eternal battle to protect humanity -- and the women they love.

When Kalith geologist Jora b'Larth notices strange seismic activity occurring around the underground energy barrier in Yellowstone National Park, she realizes someone otherworldly has been siphoning off energy. Keeping her identity under wraps, she reaches out to the enemy Paladins for help. When Paladin Penn Sebastian shows up, ready to investigate her allegations, Jora is unexpectedly attracted by his handsome face and intense blue eyes. And as they work together to solve the rift between their two worlds, something surprising happens: the two sworn enemies begin to fall in love.