I was debating between two authors for the Wild Card - Agatha Christie and Charlaine Harris. Agatha Christie is my go-to mystery author, but I have been trying to actually finish the Sookie Stackhouse books, so I've been reading a decent amount of Charlaine Harris. I finally decided to go with Agatha Christie. My first Wild Card book was The Witness for the Prosecution. I'm using it for the Cozy Mystery square.