Description: While trying to solve the problems of hyperspace, Marcus finds help in the theories of a Dr. Gregory Lanzig and decides to track him down. Lanzig proves hard to find, but Travis and Callie find his assistant Dr. Vienna Xeylon and learn she and Lanzig are one and the same. Xeylon offers a device called a horizon generator which once installed in the Tulip' will help create a stable warp bubble. Soon, Orchard agents come for Xeylon, and Callie is shot during the ensuing firefight. Callie later dies from a powerful toxin carried by the bullet that destroys muscle tissue. Not wanting Callie's death to be for nothing, Travis and Marcus infiltrate The Orchard's facility on Mars and free Xeylon, but Tristan Catchpole returns and chases the Tulip down. The only chance left for escape is to try Xeylon's device and enter hyperspace. (back in time to save Callie)