"When darkness falls, there's nowhere to hide. Four bodies have been discovered along Europe's riverbanks, placed with care-and completely drained of blood. Pinpricks on their throats indicate a slender murder weapon, but DNA found in the wounds suggests something far more sinister. Tasked with investigating, the FBI recruits Agents Della Hamilton and Mason Carter to Blackbird, an international offshoot of the Krewe of Hunters. If you want to catch...

Over a century after Jack, a new Ripper is on the loose. Following in the footsteps of notorious serial murderer Jack the Ripper, a killer is stalking the streets of London. The self-dubbed Ripper King strikes at night, leaving a trail of eviscerated bodies in his wake. Fresh off a case with potential ties to the recent rash of killings, FBI agents Della Hamilton and Mason Carter are all too familiar with a slayer set to rule with a lethal fist. And...