Keystone goes to battle with their most fearsome foe yet in this USA Today Bestselling series by Dannika Dark. In the world of crime fighting, Raven has learned that formal affairs are a necessary evil. So when Keystone receives an invitation to a winter ball, she tries to make the best of it. The most powerful elites in Cognito are attending—a perfect opportunity to network and have a few drinks. But when a guest hijacks the party in a violent display of dark power, chaos ensues. It’s a race against time as Raven searches for a way to thwart his diabolical plan. Will Keystone find the fortitude to prevent the downfall of civilization? Or will they bow to a new king to save their souls? “And a terrible curse befell the winter ball.” THE CROSSBREED SERIES Book 1: Keystone Book 2: Ravenheart Book 3: Deathtrap Book 4: Gaslight Book 5: Blackout Book 6: Nevermore Book 7: Moonstruck Book 8: Spellbound Book 9: Heartless Book 10: Afterlife Book 11: Quicksilver Book 12: Evildoer Book 13: Forevermore Crossbreed Series Insider's Guide Keywords: urban fantasy, paranormal romance, vampires, mages, paranormal, supernatural, shifters, wolves, romance, secrets, mystery, magic, modern magic, alpha male, sexy, brotherhood, strong woman, ghosts, psychic, sensors, tracker, bounty hunter, villains, sleuth, series, demons, devils, swords, sorcery, daggers, spell, adventure, journey, action, hybrids, werewolves, werewolf, curse, enchantment, castle, mercenary, rogues, assassins, kidnap, transformed, tattoo, hunters, dark, fantasy, raven, special powers, snarky, banter, chemistry, humor, sidekicks, series, urban fantasy, quicksilver, slow burn, booktok