Blood Mark After surviving life-threatening bites from three powerful strigoi vampires, tattoo artist Riley Poe has absorbed their powers and is stronger than ever. Just as she's learning to harness her newfound abilities, she and her vampire guardian fiancé, Eli Dupré, agree to join the elite Worldwide Unexplained Phenomena team. This task force, composed of vampires, druids, werewolves, and otherbeings, has been assigned to take down the Black Fallen, a powerful race of fallen angels consumed by the darkest magic. These dangerous creatures are searching for the ultimate source of power in Edinburgh, Scotland, and Riley will be the WUP team's secret weapon to take them down. She must be careful, though, or their dark power could engulf her-and her heart, too....