Cyon Castalline will do anything to earn a few minutes of Gherret's time, but Gherret avoids him at every turn. Seeing how happy his three brothers are with their mates makes him yearn to have that same connection with his mate. The harder he pursues Gherret, though, the more elusive the skittish genius becomes. Gherret Farrough has secrets. He has fears. He is fully aware that Cyon is his mate. Unfortunately, his high-functioning brain can't begin to process emotions. That is until Cyon corners him one evening and gives him a taste of temptation he finds inexplicably alluring. When Gherret realizes his mate had been injected with a deadly virus during captivity, he can no longer push Cyon away. He works against an unforgiving clock while his mate deteriorates before his eyes. Cyon's life rests in Gherret's hands. Can Gherret develop a cure in time? Or will he make a deal with a sworn enemy to save his dying mate?