First-year Border Patrol officers Rhys Davis and Liam Malone have been friends since second grade. When their new assignment puts them on the front line in tracking down a vicious and inhuman killer, an unearthly Soul-Eater, along the southern border, they must call on every resource at their disposal.
 
The most potent of these resources turns out to be memories they share from two thousand years ago, a time in the British Isles when they were partners in every way, forming an eternal bond that allowed them to defeat this same enemy in that lifetime.
 
Now, Rhys and Liam can't help but wonder...will crossing the line from friends to lovers in this lifetime destroy their friendship or build on it?