A Nebula Award-winning author reinvents the alien invasion novel with this story of a malevolent, galaxy-consuming hive mind-and its surprising human hosts. Drunk, angry, abusive, and pathetic, Dan Gurlick exists at the very lowest level of human civilization, sleeping in junkyard cars and scrounging through garbage cans for his dinner. But his last rotting meal contains something unexpected: a spore that originated from a galaxy many light-years away. First, Dan eats the spore, then, the spore eats Dan; and the homeless alcoholic becomes a host for the Medusa. An insatiable alien hive mind, the Medusa has already consumed the life forms of a billion planets. Now, it hungers for the dominant species of Earth. But to do so, it must somehow unite the planet's intelligent creatures into a single shared consciousness: an assignment the miserable wretch Dan may prove surprisingly capable of carrying out. To Marry Medusa is suspenseful, inventive, and surprisingly compassionate; a vibrant and unforgettable exploration of what it means to be more-or less-than human.