Beyond the Barrier Author:Damon Knight Was he human or alien, sent to rescue Earth or to destroy it? To decide, he must probe the terrifying secret of his past. — He reached for Churan's throat and his hands closed on air... yet the alien had not moved. With a chill of terror, Naismith realized that his arm had passed completely through the ugly, green-skinned body. — The aliens' laugh... more »ter swelled out, malicious and mocking. Behind him, Lall's voice said, "A nice try. But not good enough."« less