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If Jewel's blood matches with a vampire, she loses her freedom as a donor and possibly her life. If not, her family dies.
When the Blood Hunger Plague decimated humanity, Donor Life Corp inoculated humans against vampirism and stopped the extinction of the human race. To ensure civility, all adult humans are required to donate blood to vampires.

After eighteen-year-old Jewel's father goes missing, she applies to the Blood Match Program to save her siblings from a life on the streets. If she matches, she'll become an exclusive lifetime donor to an elite vampire in exchange for her family's safety. But the matching process turns out to be more than she anticipated. Jewel perfectly matches with Kingston, Diego, and Austin Divine, the three dangerously hot vampire heirs to Donor Life Corp, and they sweep her into a world where she turns into something she never imagined: An equal.

As powerful enemies arise to threaten her blood matching, Jewel must learn to survive in a world that would rather see her caged. If she can't, she not only jeopardizes her family's lives and the hearts of her three perfect vampires, she risks facing her final donation.