Biergarten of the Damned

I'm Sam, the werewolf book nerd in charge of The Slaughtered Lamb Bookstore & Bar. I've always thought of Dave, my red-skinned, shark eyed, half-demon cook, as a kind of foul-mouthed uncle, one occasionally given to bouts of uncontrolled anger.
Something's going on, though. He's acting strangely, hiding things. When I asked what was wrong, he blew me off and told me to quit bugging him. That's normal enough. What's not is his missing work. Ever. Other demons are appearing in the bar, looking for him. I'm getting worried, and his banshee girlfriend Maggie isn't answering my calls.
Demons terrify me. I do NOT want to go into any demon bars looking for Dave, but he's my family, sort of. I need to try to help, whether he wants me to or not. When I finally learn the truth, though...I'm not sure I can ever look at him again, let alone have him work for me. Are there limits to forgiveness? I think there might be.