Kentaro Yabuki Black Cat Vol. 3

Black Cat is the code name of former Chronos assassin Train Heartnet who now works as a bounty hunter or “sweeper” alongside his partner Sven Vollfied. Train may think his dark days are all behind him, but will he ever be able to escape from Chronos' watchful eyes? Find out in this hit manga series from Kentaro Yabuki!
In volume 3 of the Japanese language manga, Train, Sven, and Eve are called to Rubeck City at the request of the town’s mayor, Karl. A dangerous serial killer is on the loose and Eve offers herself as bait to trap him, but can the guys track him down in time?