Star Trek The Next Generation – Contamination by John Vornholt (Titan Books, 1991) Description: A murderer is loose on the Enterprise! This vintage Star Trek: The Next Generation novel by John Vornholt (Titan Books, 1991). Condition: Good – clean cover, tight binding, light age toning, minor wear. Images show condition. A collectible addition for Star Trek fans and sci‑fi readers alike.