Five years ago, Cori came back from the dead. Now, she helps her sister run a shelter for shifters fleeing London's supernatural underworld -- until a rare dragon egg is delivered to her and is then promptly stolen. To retrieve the egg, she must risk her neck in an underworld arena where shifters fight to survive.
Heritage of Fire takes place five years after Legacy of Flames. For maximum enjoyment, I also recommend reading the Changeling Chronicles and the Gatekeeper's Curse series before this one.