Greg Cox's Star Trek: Voyager novel The Black Shore sends the stranded crew to paradise planet Ryolanov, where psychic parasites called the Ryol drain life from the native neffaler and nearly hijack Voyager itself.
The Black Shore catches Voyager in one of those dead stretches of the Delta Quadrant where boredom hurts as much as Kazon raids. Crew morale is fraying. Harry Kim melts down on his birthday. Then Ryolanov appears on long-range sensors: golden beaches, warm invitations, and a chance at shore leave.
Captain Janeway beams down to meet the elegant Ryol leader Varathael and his inner circle. The welcome looks perfect. Tom Paris finds the nightlife. B’Elanna Torres scouts for dilithium. Kes senses something wrong beneath the harbor that nobody else wants to hear.
The neffaler, small furry locals treated as servants, hold the key. Genetic evidence reveals the Ryol are invaders who crashed on Ryolanov ages ago and reduced a graceful civilization to broken shadows. The Ryol feed on vitality, seduce the lonely, and push Voyager’s exhausted crew toward mutiny.
Greg Cox builds the story like a long Voyager episode with horror undertones. Chakotay’s vision quest, Torres’s antimatter discovery, and Kes’s psychic link to murdered neffaler stack clues until Laazia seizes the bridge and Varathael demands the ship. Janeway fights back with holographic traps, wide-dispersion phaser bursts, and a Prime Directive call to exile the Ryol so the neffaler can recover.
The climax is loud: were-beast transformations, engineering firefights, ghost neffaler rising from the black shore. The ending is quieter. Voyager salvages antimatter, plants a warning beacon, and leaves. One crew member does not make it home. Kes hears flute music again and hopes the neffaler have a future.
If you want a self-contained Voyager adventure that blends shore-leave fantasy with invasion thriller, this 1997 Pocket Books novel delivers. It is not required reading for canon fans, but it captures early-series Voyager at its most vulnerable, and the neffaler storyline gives it more heart than the average tie-in.