Gift of the Black Tome

Annabel was not the first successful raising of the dead that Malcolm Fade did. No, there was another being there, a Nephilim that he intended o use to get one of the most powerful warlocks alive on his side.
And while Annabel waited, this Nephilim did not, instead seeking out those he had loved before.
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Tessa wakes up crying one night, as does Jem. They stare at each other, Tessa's eyes wide with shock at the return of Jem's silver eyes and hair, and Jem's eyes wide with shock at the sudden spark running through his parabatai rune.
His parabatai rune, which is not faded, but stark and black against his silvery skin.