Simeon Krug is a self-made man, fantastically wealthy, having built a huge fortune with his android "products," genetically-engineered human slaves who worship him as a God. Krug epitomizes self-aggrandizement, oblivious to his own ego and the price others pay for his prominence. Currently, Krug's latest project attempts to communication aliens in response to enigmatic signals from a distant and uninhabitable world--and to do so he must build a huge tower, a mile high, in the Arctic tundra. Closer to home, in trying to organize to receive basic human rights, Krug's androids come to learn that their "god" has feet of clay, that he is merely human and as flawed as any mortal. His son, and heir, is uncomfortable with the reach of his father's ego and is unwilling to take on the mantle of divinity. The implications of this discovery and the underlying conflicts threaten much more than the TOWER OF GLASS... Now with a new introduction by the author.