First and foremost, no, this has nothing to do with the green ghost from Ghostbusters. There. Now that that is out of the way, we can move on...
SPOILERS!!!
Slimer is a science fiction horror novel by Harry Adam Knight, which is a pen name of Australian author John Brosnan and his frequent collaborator Leroy Kettle. Brosnan also wrote the novel Carnosaur under the Knight pseudonym (which was made in a crummy movie in 1993 by Roger Corman). In it, six people are marooned in a life raft after their yacht sinks in the ocean. Our characters consist of protagonist Paul Latham, his girlfriend Linda Walker, Alex Rinaldo, the lone American in the group, Paul's best friend and the yacht's owner Mark, Mark's girlfriend Chris and Alex's girlfriend Rochelle. Yeah, three couples. They're screwed for the time being because the boat sank while they were running dope and heroin and nobody called for help because they were too scared about going to jail and now they're stranded in the ocean. Idiots.
Right off the bat, Alex is the most unlikable and antagonistic character. He treats Rochelle like crap and makes passes at Linda right in front of Paul, and withholds his heroin stash from junkie Mark, even whilst Mark is going through painful withdrawal symptoms, and forces Chris to suck him off in exchange for her boyfriend's fix. What a douche. If you don't want Alex to die horribly the minute he appears and starts giving Paul shit for no discernible reason, then the novel goes out of its way to make you hate his guts.
And speaking of Mark's heroin problem, Paul is unaware of it. Somehow Mark hides it from him. Paul apparently draws the line at actually using the drugs they were smuggling. Beyond this seeming hypocrisy, Paul is the sole likable character in the novel. As I've said, Alex is a jerk of the highest order, Linda and Chris are whiny, useless clods, Mark is a junkie who shows signs of intelligence and likability early on but grows more and more dickish as the story progresses (mostly due to his heroin addiction admittedly) and Rochelle, while not as bad as her boyfriend, is still basically just a female version of Alex. Only Paul seems completely resourceful, likable and at all intelligent.
But I know what you're thinking. Where's the slime in a novel called Slimer? Well, eventually, the six idiots stumble across an oil rig belonging to a company called Brinkstone, which none of them have ever heard of. There's no way to climb up so they shout for help. In response, a crane lowers down and lifts them up but once aboard the rig, they see no one around. There isn't even anyone in the operator cab for the crane, and upon investigating, Mark finds some odd blackish slime and empty clothes, but nobody believes him, apparently not finding the question of where the crane's operator suddenly went to at all relevant. They discover the rig is actually a front for a top secret research laboratory but again can find no one around. Just more empty clothes. Now they begin wondering where the clothes' owners went. Took you jerks long enough. In addition to all the empty clothing they also find a giant, empty aquarium and some discarded and mysteriously unfired M16s, which they appropriate; Alex is the first to grab one, and wary Paul gets one for himself just so he's on even footing with the American, who he doesn't trust.
That night, as they sleep in different rooms, each couple to a bedroom, something big and nasty tries to smash its way into Paul and Linda's room. Paul unloads his M16 into it and drives it off, and then they chase after it, intent on finishing it off, whatever it is. They find no blood despite the fact Paul is positive he shot the thing thirteen times. Here, they suddenly bump into an apparent survivor, Dr. Gordon Shelley, who warns them to leave the rig as soon as they can. Of the creature, he says its name is "Charlie" and that it is "under control" now. He promises to explain more in the morning and everyone goes to bed, but in the morning, Shelley is missing and although the gang attempts to take his advice and leave, they find the rig's compliment of speedboats have been sabotaged, and so has the radio. They encounter more people, each one explaining a little bit about what happened before having to suddenly run off because "Charlie is coming." Scientist Dr. Carol Soames calls it the Phoenix project before she has to vamoose because of Charlie's impending arrival. Things become even weirder when a third survivor the group meets, security guard Ed Buckley, turns into Charlie, a huge, sharklike monster, attacking the group before being driven away.
It soon becomes clear that the Phoenix project turned an ordinary great white shark (the original inhabitant of that big aquarium) nicknamed Charlie by the scientists into a genetic freak which can shapeshift, turning itself into slime and absorbing the minds and bodies of its victims and also occasionally taking their form to trick more victims. The consumed people are still conscious inside of Charlie's brain, but mostly entirely helpless; only the most strong willed (such as Dr. Shelley) can exert themselves as the dominant personality long enough to use Charlie's shapeshifting abilities to turn its body into theirs, so they can try and warn the others... but Charlie always regains control.
With no way off the rig, how can our stuck heroes (such as they are) hope to survive against a mutated, shapeshifting, super-intelligent great white shark which is impervious to automatic weapons? They better think of how and fast, 'cause Charlie is forever on the hunt for more genetic material to consume. Like our six stranded drug smugglers. Uh-oh. I hope it gets Alex first (Spoiler: Alex actually dies--or rather is absorbed, second).
Of course that's going to be difficult when half the time the characters can't cooperate with one another. At least the most troublemaking member of the group is gone fairly quickly, but of the remaining characters, only Paul is particularly worth much. Linda basically just clings to his arm the entire time, Mark is a heroin junkie and Chris may as well just not exist (although I really feel terrible for her for the shit Alex puts her through).
This was a pretty darn good little book. Suspenseful and has some decent ideas even though it's essentially The Thing relocated to an oil rig out in the ocean. However unlike The Thing and the novella it was based on, Who Goes There, the absorbed and copied people are still conscious inside of the monster, calling to mind the Abzorballoff in Doctor Who years later), which is pretty chilling and to me sadder and more terrifying than if they'd simply died. No wonder the book's tagline is "Death was only the beginning!"
The novel was made into a film titled Proteus, which was a fairly decent adaptation. Most likely because John Brosnan himself wrote the script. It makes some odd changes such as making Alex the main character and making him a badass, likable DEA agent, and also inexplicably now English, whereas the novel's English characters are now American and Alex's douchebag qualities are divided between Mark and Paul, the latter of whom, in the farthest fall from main character status I can think of, is actually Charlie's very first victim in the movie. They also for some reason insisted on giving Dr. Shelley a Russian accent. Funny. "Shelley" doesn't strike me as a Russian surname.
Beyond these weird changes the effects are a bit lame, particularly the shark monster animatronic used to represent Charlie's true form. It leaves a lot to be desired. The editing is also weird. But all in all, the acting is quite good, especially from Craig Fairbrass as suddenly good guy Alex and minor details aside the plot is pretty much beat for beat an accurate retelling of Slimer. A much better effort than Corman's insultingly terrible Carnosaur.