Two decades has passed since Lena's Trials, and finally, the Klint Empire is at peace. Or so they thought. Just when they've finally caught everyone responsible for kidnapping human breeders, they encounter one enemy they can't hope to win against: nature. Alek, Lena and Calden's child, the darling of the Empire, is turning into a Beast. They've come to understand the process now, so they know it means he has met - and subsequently has been separated from - his mate. The only problem is that Alek travels from one end of the galaxy to the next on a regular basis. No blood test finds his match, no recollection gives him any clue. There's only one person who can rationally analyse his cerebral function and come to a solution in time to stop the rapidly worsening condition: Cedar, who hasn't once stepped outside since he condemned himself to slide time of confinement. —- Rule is the last volume of this journey through time and space - if you haven't understood a word of that description, please read Rise and Rage, first. Note: to those who prefer to have everything in one go, a bundle including all three books will be available on the same date as Rule.