Thomas P. is 13 years old and discovers that he has a very uncommon ability. He can hear what others think. It's an ability he has inherited from his dead father. Or is he dead? His sister, Siss, who has the same abilities as Thomas, thinks their father is trying to contact them. But what does he want? Has he come back to warn them that they're in danger? And if he's living in hiding, who is he hiding from?