Prey is a novel by Michael Crichton, first published in November 2002. An excerpt was published in the January–February 2003 issue of Seed. Like Jurassic Park, the novel serves as a cautionary tale about developments in science and technology; in this case, nanotechnology, genetic engineering and artificial intelligence.The book features relatively new advances in the computing/scientific community, such as artificial life, emergence (and by extension, complexity), genetic algorithms, and agent-based computing.The novel is narrated by the protagonist Jack Forman, who is an unemployed software programmerwho used to work for a company called Media Tronics when he was firedfor discovering an internal scandal. As a result, he is forced to takethe role of a house husband while his wife Julia serves as a highranking employee at a nanoroboticscompany called Xymos. Julia claims that she is working on a new pieceof revolutionary imaging technology with her company, which takes upmost of her time.

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He starts believing that during her long hours awayfrom home she is having an affair, and becomes watchful of her changes.One night Julia comes home late and shows Jack a video of her demoingthe Xymos nanobots. In the video, the nanobots are put into a humantest subject, and video from inside the body is broadcast in real time.The next day, Julia is injured in a car accident, and Jack is offered ajob by Xymos, because the project manager, Ricky, is having softwareissues with the nanobots.Jack is taken to the Xymos research facility in the desert. Jack isgiven a tour of the lab and meets the programming team. He is shown avery complicated machine used to make the nanobots. Ricky refuses toshow Jack the source code for the nanobots, and later Ricky claims thatbuilding contractors failed to properly install filters in a certainvent in the building. As a result, hazardous elements such as theassemblers, the bacteria, and the nanobots were blown into the desert,evolving and eventually forming autonomous swarms.

These swarms appearto be solar-powered and self-sufficient, reproducing and evolving rapidly. The swarms exhibit predatorybehavior, attacking and killing animals in the wild, using code thatJack himself worked on. Most alarmingly, the swarms seem to possessrudimentary intelligence, the ability to quickly learn and to innovate.The swarms tend to wander around the fab plant during the day butquickly leave when strong winds blow or night falls.The nanoswarm kills a rabbit outside the complex, and Jack goesoutside with Mae to inspect. They find that the rabbit died ofsuffocation resulting from the nanobots blocking its bronchial tubes.While Mae goes inside for equipment, Jack is attacked by the swarms. Hebarely manages to get through the airlock inside the lab before fallingunconscious from anaphylactic shock.Persuaded by Jack, the team decides to destroy the swarm.

Theybelieve that the swarm must have nested in the desert to reproduce. Theyattempt to find this nest by tagging the swarm with radioactive isotopesand following them back to their nest at night. Under the cover of astrong wind that forces the swarms to remain dormant, the team goesoutside to a storage shack to find the isotopes and build a spraydevice. However, as the wind dies down, four swarms attack the shack andeventually kill David and Rosie. The rest of the team are forced totake shelter in the cars parked outside. The Swarms begin an attempt toenter the cars.Eventually, the swarms find a way to enter the cars, but not longbefore the wind picks up in speed again. Jack and Mae manage to escapeto the lab before losing consciousness, but Charley falls unconsciousoutside his car after he sprays his swarm with the isotope.

Bobby, Vinceand Ricky refuse to go outside and help Charley. Jack, dizzy andnauseous, goes back out again to save Charley as the swarms attacksagain. Using a motorbike found in David's car, Jack manages to gethimself and the semi-conscious Charley to the safety of the airlockbefore he falls unconscious again.As night falls, Jack, Mae and Bobby set out to find the swarms. Whilesearching for them, they discover that one of the swarms, now soevolved that it can operate without solar energy, is moving the nowdeceased Rosie through the desert. They follow the body to find theswarms nesting in a cave. As some of the swarms come out of the caveafter them, a Xymos helicopter arrives and traps the swarms inside thecave using its powerful draft. Mae and Jack then venture into the caveand proceed to exterminate the swarm, their nest and their organicassembly plant (which looks very similar to the original Xymos assemblyplant) using explosive thermite caps.

They return to the Xymos plant,exhausted.At the plant, Jack, Mae and Bobby are enthusiastically greeted byJulia, who was earlier discharged from the hospital and was brought inby the chopper. Julia's behavior seems to be extremely aberrant: Sheseems to pay heed to nothing other than trying to entice Jack andkissing him, even when Charley is found dead in the lockedcommunications room with a swarm flying around him and the communicationlinks cut. Jack cannot understand how the swarm got inside therigorously protected airtight building, why Charley would have disabledthe facility's communications, or why Julia and Ricky seem to be comingup with various out-of-character ways of how he died.Mae discovers security footage of when they were in the desert. ToJack's horror, the video not only reveals that Julia and Ricky had anaffair but also shows how Charley engaged in a vicious fight with Rickyand Vince. All of them end up in the communications room where Juliakisses a subdued Charley, injecting a stream of swarm into his mouth.Eventually, Jack and Mae realize that everyone in the facility exceptthemselves have been infected by a symbiotic version of the nanobotswarms. These nanobots, although evolved alongside the other swarms, donot show aggressive predatory behavior.

Instead, while they seem toinvigorate their hosts' physical statistics and their perception, theyslowly devour and take over their hosts, initially affecting theirdecisions and then controlling them, while allowing them to travel andcontaminate others.Jack comes up with a plan to destroy this new strain. Mae and Jack drink vials containing a form of phage that kills the nanobot-producing E. The phage would protect them from infection.

Jack thenproceeds to take a sample of the phage and pour it into the sprinklersystem and drench everyone with it. He tricks Mae into alerting Juliaand the infected team.

They set out to stop Jack. In the viciousstruggle that ensues, Vince is killed and Jack, who barely escapes deathseveral times, finally manages to place the sample into the sprinklersystem.In order to prevent the sprinkler system from triggering,infected-Ricky disables the plant's safety network.

However, this isexactly what Jack wants, as Mae has already allowed the phage into theassembly line, causing the phage to reproduce rapidly. The assembly lineis rapidly overheating because of the no longer active safety system.If Ricky and Julia do not turn on the safety system the assembly linewill burst, filling the lab with the phage. The infected-team, who arenow doomed either way, choose to re-activate the safety network and getdrenched with the phage.

Jack and Mae escape the facility in ahelicopter shortly before the facility explodes due to a methane gas leak combined with thermiteMae has placed in the building. After returning home, Jack infects allhis children with the phage to eradicate the potential nanobotinfestation. Mae calls the U.S. Army and sends a sample of the phage toher lab.Jack puts together all the missing links. The corrosion of the memorychip in Eric's MP3 player as well as Amanda's rash were caused by gammaassemblers.

The MRI's strong magnetic field detached the assemblersfrom her. These assemblers were most likely brought home by Julia.Knowing this, Julia called in the Xymos special team to scan Amanda'sroom. The person who Jack spotted in Julia's car was in fact the cloudof nanobots. Xymos intentionally released the swarm into the desert sothat it would evolve to stay in a cohesive group in the wind.Click here toPlease share if you liked it.

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