I Live Among You — Duncan McGeary

When the Devil comes a-calling, Grandy isn't surprised. He's a damned soul-or so he thinks. When the urge comes over him, he kills without pity or remorse. But the Devil isn't after his soul. Not just yet. He hires Grandy to infiltrate a cult which is planning to open a Portal to another dimension. The Old Gods await. It's a jurisdictional issue. The Devil can't go where he isn't invited. But Grandy can.