A Tether of Smoke and Silver

Ember Hawthorne has spent her life blending in, working as a quiet librarian in the smog-choked city of Oakhaven. But when she begins to manifest illegal, chaotic magic she can't control, she attracts the attention of the Council's deadliest weapon: High Silencer Kyrin Rubrum.
Kyrin is a vampire and a legendary hunter, forged by the centuries-old trauma of his family's murder at the hands of a rogue mage. But when he tracks Ember down, he doesn't arrest her. Instead, he discovers they are bound by a rare psychic "Tether"-a connection that forces them to share dreams, sensations, and pain.
As a mysterious ancient entity known as "The Master" emerges from the shadows to harvest magic-users for a genocidal Purge, Kyrin realizes Ember is the specific target the enemy has been waiting for. Forced into an uneasy alliance, Kyrin must protect the very thing he hates to stop the monster that destroyed his past-unaware that the secret hidden in Ember's bloodline might be the most dangerous weapon of all.