Vampire Federation Series by Scott G. Mariani, Sean McCabe

A gruesome ritual murder has stained the Oxfordshire countryside. It's just the first incident in a chain of events awakening Detective Inspector Joel Solomon to his worst nightmare-and a dreadful omen of things to come. Because Joel has a secret: he believes in vampires. Alex Bishop is an agent of the Vampire Intelligence Agency. She's tasked with enforcing the laws of the global Vampire Federation, and hunting rogue members of her race... moreA gruesome ritual murder has stained the Oxfordshire countryside. It's just the first incident in a chain of events awakening Detective Inspector Joel Solomon to his worst nightmare-and a dreadful omen of things to come. Because Joel has a secret: he believes in vampires. Alex Bishop is an agent of the Vampire Intelligence Agency. She's tasked with enforcing the laws of the global Vampire Federation, and hunting rogue members of her race. A tough job made tougher when the Federation comes under attack by traditionalist vampires. They have a stake in old-school terror-and in an uprising as violent as it is widespread. Now it's plunging Alex and Joel into a deadly war between the living and the unloving-and against a horrifying tradition given new life by the blood of the innocent. less

The vampires call it the Cross of Ardaich: a relic thought to have been destroyed in the war between the Federation and the rebels. But it has been found, and its incredible powers could signal the end of civilization...A cannibalistic serial killer becomes the perfect tool for the race of the Ubervampyr. His mission: find the cross. His reward: join the ranks of the undead. On his trail are Detective Joel Solomon and Vampire Federation agent Alex Bishop... moreThe vampires call it the Cross of Ardaich: a relic thought to have been destroyed in the war between the Federation and the rebels. But it has been found, and its incredible powers could signal the end of civilization...A cannibalistic serial killer becomes the perfect tool for the race of the Ubervampyr. His mission: find the cross. His reward: join the ranks of the undead. On his trail are Detective Joel Solomon and Vampire Federation agent Alex Bishop. Once lovers and now enemies, they must work together to prevent the ultimate disaster. Unless they can foil the vampyrs' plans, salvation for the race will be just a dream gone bad. less