Beatrice Fletcher, great-grandniece of famous mystery writer Jessica Fletcher, is obsessed with the unsolved mysteries and murders of Cabot Cove, Maine, but this time the case becomes personal when her best friend Jackson disappears and she must rely on the help of three students from the elite Broadmoor Academy to find him.

Emotionally crippled by his obsessive-compulsive disorder, teenager Matthew Corbin rarely leaves his room on a cul-de-sac in London, and he passes the day observing and writing down his neighbors doings from his window--but when a toddler staying next door disappears Matt is the key to solving a mystery and possibly saving a child's life...if he can manage to expose himself, and his secret guilt to the outside world.

When an army of fairy space probes programmed to destroy Atlantis return to Earth, Artemis Fowl attempts to stop the destruction of the city while dealing with his delusional and obsessive-compulsive disorders.