Mardi Gras is #2 in The Misgivings of the Vampire Lucius Lafayette series.
Hot on the heals of Jack the Ripper, Lucius can taste the werewolf's flesh as he is called back to present times. To his home in New Orleans.
Which pack of werewolves has the audacity to attack the Lafayette Killing in their very home. Nobody tries to murder Baron Lafayette's family in his own house.