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|title= Blood Bound (Mercy Thompson)

|author= Patricia Briggs

|date= July 2008

|isbn=978-1841496849

}}

There's nothing much I can teach you about being indebted to a vampire you don't already know, so let me instead use the example of our heroine Mercy. The vampire, Stefan, calls in his favour, and takes her as company to meet a fellow preternatural, in the form she can naturally, easily, adopt – that of a coyote. It's a bloody encounter, however, and one that carries an awful threat to the entire vampire race.