Hazel Lynn has spent her whole life training to take on the role of Gatekeeper between the Summer Court and the mortal realm. With her entire family bound into service to Faerie, it's up to Hazel to maintain the peace and prevent any dangerous fae from escaping to Earth. To do that, she must pass the Gatekeeper's Trials and earn her right to stand among the powerful and wealthy Sidhe of Faerie. Unfortunately, her new mentor hates humans like her. He might be pretty to look at, but he has no intention of giving her an easy time of it. But things go from bad to dire when the King of the Summer Court is assassinated. Worse, all the signs point to a human being responsible. Since Hazel and her family are the only humans permitted to enter the King's domain, the blame lands squarely on them. Before long, Hazel's aggravating new mentor is the only person in Faerie she can trust not to sentence her to death on the spot… assuming he isn't the murderer himself. With her loved ones' fates resting in her hands, it's up to Hazel to catch the killer before the vengeful faeries take out their wrath on the rest of humanity.