Criminal Macabre: My Demon Baby (2007) #3

Cal McDonald: drug-fueled paranormal private investigator, friend of ghouls and werewolves, vampire slayer . . . babysitter? Cal finds himself protecting a baby who has a good chance of growing up to be Satan's representative on Earth, while facing down a bunch of devoted devil worshipers and a relentless, reanimated Templar Knight ready and willing to slay anyone in his path! From the creator of 30 Days of Night!