Resident Evil: Underworld

Resident Evil: Underworld is a novel written by S.D. Perry in 1999. Underworld is the fourth Resident Evil book written by S.D. Perry, the fifth in chronological order, and the second which is not based directly on one of the games.

Plot
Leon S. Kennedy, Claire Redfield, and the survivors of the Caliban Cove incident are en route to Europe to rendezvous with the other surviving S.T.A.R.S. members for further operations against the evil Umbrella Corporation. While in the air, their plane is redirected by the mysterious Trent, an enigmatic figure who has been guiding and manipulating events throughout the entire series of novels. Trent informs the group of "the Planet," an Umbrella facility in Utah used to test and train the company's experimental biological weapons. The facility's overseer, a man named Reston, is one of three people in the world in possession of a codebook which would allow access to all of Umbrella's most secret documents. Trent wants the group to infiltrate the facility, steal the codebook, and take down Umbrella once and for all.

Reluctantly agreeing to Trent's plan, the group make their way into the Umbrella facility. They soon find themselves trapped within the facility's testing area, forced to trek across four massive, artificial environments while evading Umbrella's deadliest new monsters...

The Planet
The secret Umbrella Corporation testing facility known as "The Planet" is housed deep beneath a disused-looking (and completely fake) meteorology station in the deserts of Utah. Besides necessary offices, laboratories, and other infrastructure, the Planet consists of four enormous artificial environments designed to replicate conditions in which Umbrella's B.O.W.s may be used. They are arranged sequentially.

The first environment replicates a forested area and is intended for testing "Dacs"&mdash;giant, mutated birds. The name "Dac" refers to pterodactyl, an ancient flying reptile.

The second environment mimics a desert and is inhabited by "Scorps," which are essentially oversized scorpions. Scorps are particularly hard to kill because, when injured, they secrete a fluid which quickly seals their wounds.

The third environment simulates mountainous terrain, complete with a rickety rope bridge. It is inhabited by "spitters"&mdash;creatures best described as hybrids of goats and reptiles. Their red, scaled skin is resistant to small-arms fire, and they are capable of projecting highly toxic venom long distances.

The final environment is fashioned after a common city street, lined with storefronts and illuminated by street lights. It houses a new form of Hunter which is capable of chameleon-like camouflage, rendering it practically invisible.

There is another B.O.W. being housed at The Planet&mdash;a new and extremely powerful type of Tyrant nicknamed "Fossil" because of its resemblance to an anthropomorphized tyrannosaurus.