Nick Medea is the name that Saint George goes by in Black City Saint, an urban fantasy by Richard A. Knaak (The Legends of the Dragonrealm). Nick did indeed slay the dragon 1,600 years ago, but has since been reincarnated, along with the spirit of that dragon, who's none too pleased to be trapped within the human who struck the killing blow.
Nick is a supernatural investigator in 1920s Chicago, 50 years after the Great Fire (which seems to be connected to a time when Nick let the dragon take over his body). Al Capone and Bugs Moran are leading gang bosses who, because of Prohibition, make the lives of everyone in the city just a bit more dangerous--a situation that Oberon, the supposedly dead Lord of Feirie, isn't helping as he schemes to open the gate between this world and his own.
It also doesn't help that Claryce, the reincarnation of Nick's old girlfriend, is in Chicago, making it difficult for Nick to keep tabs on Oberon while also protecting her (and he's only a little patronizing).
While the language can feel stilted at times (Nick is pretty old, though, so it's excusable), Black City Saint builds a colorful version of Chicago in the '20s, along with entertaining characters to root for. These include Feirie-born creatures like the lycanthropic Fetch, Nick's loyal ally in keeping the city safe from Wyld creatures from Feirie, as well as mortals like Detective Cortez, who knows less about the supernatural but proves willing to back up Nick when necessary.
Knaak has delivered a promising, original first novel in a planned series. --Rob LeFebvre, freelance writer and editor