The Happy Family Murders: Third book in the series titled Grimoire - the Bros Grim Breakfast Serial - a story in pieces

The Happy Family Murders, third book in the Grimoire series, caps a trilogy that has charted the progress of a murderous opposition to the over-the-hill spooks who hang out at Caspar's Books and That in Buffalonya, a Rust Belt city that is roughly equal to Buffalo, New York, but getting even less respect.