While investigating an asteroid belt containing a new element, Harry Kim is pulled into a "subspace vacuole" and switched with a dead body. Soon after the body is revived the crew learns that the asteroid belt is the graveyard of an alien culture that transports its dead in the belief that they evolve into a higher state of consciousness. Harry's appearance on the home world begins to raise questions about the existence of their afterlife.
A new intelligence gropes its way to life in the depths of wires and circuit boards - only to find itself perched on the edge of immediate extinction. When it fights back, killing Mulder's former partner in the process, he and Scully must find a way past its considerable defences.moreless