Lucas by Kim Allred

War is coming. The outcome hinges on one artifact.

Lucas Maynard is cadre in service to House Trelane. He has one mission—locate an ancient book or find the curator who hid it. His secret task could bring two distant races together or propel vampire society into a civil war.
Ginger Morrison is a human living among vampires. Though humans in a vampire House are common, there are days when she feels like an outsider, made terrifyingly real when House Trelane was threatened with sanctions that could have put her back on the streets.
Her fears dissipate when Lucas asks her to join him on his mission. Though the assignment is dangerous, a couple of weeks alone with Lucas is enough to drive away any concern for her safety.
But trouble follows their every move, and their lover’s holiday becomes a battle for survival.
How far will a human go to save the life of a vampire?