GCSE's are over and sixteen-year-old Imogen is looking forward to a perfect, lazy English summer. But her world is turned upside down by three refugees, all hiding from life. Anthony is fourteen, already an outcast, bullied and shunned by his peers. Farid is an asylum seeker from Afghanistan, who has travelled across continents seeking peace. And Gordon Craig is a bitter, lonely man. She knows all of them, but she doesn't know how dangerous they are.
After the success of his first assignment from the UNICORNE agency, fourteen-year-old Michael Malone is given another unexplained mystery to solve. When UNICORNE detect strange goings-on in a comic book shop, Michael is sent to investigate - a task which is made all the more difficult by allies he can no longer trust, and an enemy he can't actually see .