BLOOD BOUND
"She constructs bridges. You construct barriers, but they should protect rather than divide—a fascinating development.
Among the new kids this year were twin hybrids—Vampire-Werewolf crosses—whose very existence was medically improbable. The physiologies of natural werewolves and vampires were too dissimilar to allow for interbreeding. In any case, these twins were born to a vampire father and a werewolf mother under mysterious circumstances.
Before Silverwood took them in, they were 10 years old, erratic, and had lived their whole lives being examined like laboratory animals. The boy Kieran stated sourly, "People kept trying to figure out how we exist."