by Edgar Wallace ~
Tim discovers that Professor Colson, his science teacher, is in contact with another world. The information the Professor is receiving has made him rich, but has also made him a powerful enemy, who will stop at nothing to use the Professor's discovery to his own ends. Planetoid 127 is one of the earliest examples of the 'twin worlds' science fiction theme, in combination with the traditional crime/thriller genre of which Edgar Wallace was an acknowledged master.