My Name Is SOS - Patricia Cunningham - Bog

Once he had acquired a respectable nickname, Sos was sure he was destined for great things, but he did not expect them to happen in the way they did. Sitting in the classroom, during an English test, he suddenly found himself on his feet shouting, "Isn't anybody listening.' It was his voice, but he hadn't said it. And so began an exciting adventure for him and his friend Sandy as they attempt to free Will Naylor from the clutches of the strange Dr Maxwell.