You Can'T Lie To A Saint

Chloe, who works as a priest's apprentice at a remote church, is a money-loving girl who makes a lot of money by gambling cards night after night, using her innate insight and memory as weapons. Nouveau riche holy knight Eraldo visits her and asks Chloe to "infiltrate the Great Church as a candidate for a saint and find the criminal of the murder two years ago"...!?