All Charlie Tickler wants is for his parents to listen. Charlie's parents have left him (again). This time they are off to South Africa to help giant golden moles. And Charlie? He's been dumped with his TV-obsessed grandparents. Lonely and curious, Charlie heads into the village of Castle-on-the-Hudson, where a frightened old woman gives him a desperate message-in sign language. When she suddenly disappears, Charlie is determined to...