Reggie Rabbit isn't sure about his best friend Pipsquark's other best friend, Kai. She seems too good to be true and he doesn't believe her stories about the terrifying ghost that is haunting Seagull Rock, where her family live. But when Reggie and Pipsquark are invited to Kai's for a sleepover, they hear the ghost howling with their own ears! Could it really be the phantom of seagull pirate Blackbeak? Or is something else afoot? In this fast-paced detective adventure nothing is quite what it seems. The young detectives will have to use their ears, snouts, and tread with careful paws if they are to get to the bottom of this case. Sometimes you can't even trust the evidence of your own eyes!