In "Small Favor" by Jim Butcher, Harry Dresden, the Chicago wizard, finds himself in a tough spot when his old enemy, Nicodemus, calls in a favor. Dresden is tasked with finding the missing Shroud of Turin, but there are other forces at work who want to get their hands on the holy relic. Along the way, Dresden has to navigate tricky alliances with supernatural beings, including the archangel Uriel and the fairy queen Mab. As he tries to unravel the mystery of the missing shroud, Dresden is forced to confront his own mortality and the darker aspects of his own magic. With his friends and allies at his side, Dresden battles through dangerous encounters and high-stakes confrontations to prevent the world from falling into chaos.