Everyone in my family has killed someone

Ernie Cunningham, crime fiction aficionado, is a reluctant guest at his family reunion. Family reunions aren't for everyone, of course. But Ern's part of a notorious crime family, and three years ago, he witnessed his brother kill a man and immediately turned him in to the police. Now Ern's brother is being released from prison, and the family is gathering to welcome him home. As if that weren't bad enough, the reunion is taking place at a remote mountain resort. The day before Ern's brother is set to arrive, a man's body is found frozen on the slopes. While most Cunninghams assume the man simply collapsed and died of hypothermia during the night, Ern's stepsister spots a strange detail: the man's airways are clogged with ash. He appears to have died by fire. In a pristine snowfield. Without a single burn mark on him. The longer the body goes unidentified, the more overwhelmed the local policeman becomes, and the more Ern realizes it's up to him to find the murderer. Holmes, Christie, Chesterton: he's read them all. He knows what patterns to look for, what rules killers follow. And, of course, he knows his own family. Every member of which, as he's said from the start, has killed someone.