Blood From Stone. Retrievers, #6

Wren Valere is Manhattan's most sought-after Retriever, but after last year's deadly confrontation with the anti-magic Silence, all she wants is a break. A few months of quiet, time to figure out where her life - and her relationship with partner Sergei - is going. But then a seemingly simple assignment to retrieve a kidnaped child puts her on a collision course with the past- both hers, and the demon PB.'s. To save a friend and protect her future, Wren must pull off the most important Retrieval of her life - and for once, magic isn't on her side.