Mary: Chasing a Killer (Tales of the Executioners)

Short story. Part of the Tales of the Executioners, stories about the vampire's elite "police force".

Mary's spent ten months chasing a rogue vampire and finding clever ways to cover up his mass slayings - from fire to fake ax murder scenes. Finally, in a small town in Iowa, things are about to come to a head. She'll catch him this time - or else.