In "Small Favor", Karrin briefly comes into possession of "Fidelacchius", one of the swords wielded by the Knights of the Cross. She is able to make use of its power to defend Harry from a Denarian, in what Harry calls a "job offer." Karrin, however, declines to become the sword's new bearer because she has already sworn an oath to protect Chicago, and it remains in Harry's care. It appears the Dresdenverse God is quite in favor of how she approaches her job.