A science fiction trilogy by Anne McCaffrey, consisting of The Crystal Singer, Killashandra, and Crystal Line.
The technology that supports intergalactic civilization is made possible by the unique crystals mined on the planet Ballybran by the Heptite Guild. Becoming a crystal miner requires meeting some strict prerequisites, including possession of perfect pitch, and nobody but miners and candidates who have met the prerequisites are allowed on the planet. The reason is that Ballybran is home to a symbiotic organism that infects anybody who visits, but not always with complete success, and one of the consequences of an incomplete accommodation is that if the host ever leaves Ballybran they will die. A completely successful symbiosis provides the host with a range of advantages, including super senses and a greatly increased lifespan (and they can leave the planet without dying, although only for limited periods); these are the Crystal Singers, the stars of the Guild and the ones who do the actual mining.
The protagonist of the trilogy is Killashandra Ree, who leaves home after her dream of a musical career is crushed, learns of the Heptite Guild, and decides to try out to become a Crystal Singer.
This series provides examples of:
- Adult Fear: In the third book, Lars has to watch as Killashandra slowly succumbs to dementia.
- Also in the third book, a husband and wife whose daughter is dying of an incurable degenerative disease let her join the Heptite Guild in the hope that she'll be cured, but there isn't a 100% chance and even if the symbiont works (it does), they'll never see her again.
- Blessed with Suck: Candidates to join the Heptite Guild are exposed to microscopic symbiotes by the very atmosphere of Ballybran itself. The symbiotes grant those exposed with extended lifespans, enhanced physical abilities and super senses — unless they die, or only get a partial enhancement. The majority will end up with one sense enhanced to a Power Incontinence level (one wears special lenses to keep him from seeing everything on a microscopic level), and sometimes the enhancement will boost one sense and shut down another (another with super vision is rendered deaf). The Singers (those with perfect transitions) don't escape unscathed either, as constant exposure to the piezoelectric fields of the crystals scrambles their brains, causing memory loss and personality alterations. Some just straight up die. And they ALL share an inability to leave Ballybran for long, otherwise their symbiont will start to weaken, causing them to sicken and die. Veteran Singers tend to either break down physically and retire to a convalescent home or get locked into a cycle of "Obsessively mine enough crystal to make it off Ballybran for a long time, be forced to return to renew the symbiont or when the money runs out, rinse, repeat." The risks are considered "worth it", due to the long hedonistic lifestyle the lucky ones get to live before things start to sour, and some join the Guild with the hope that they won't become singers, but will instead be able to live comfortably doing research and so on.
- Canon Welding: The incidental details of the series include BB Ships, the main plot device of McCaffrey's earlier The Ship Who...... stories.
- Character Death: Trag, Antona and Enthor are dead in between Killashandra and Crystal Line. Lanzecki and Rimbol die in Crystal Line.
- Chekhov's Gun: Early in Crystal Line, Lars and Killashandra are sent to investigate a crystalline substance on an uninhabited planet that they nickname the 'Jewel Junk', and find that it appears to be sentient. The Junk returns later in the book, and winds up restoring all of Killashandra's lost memories.
- Computerized Judicial System: Near the end of Killashandra, Killashandra's boyfriend Lars Dahl is given a computer-controlled trial for kidnapping her as well as other charges. She has forgiven him and wants him to be acquitted, but the Judicial Monitor computer's equipment reads her heightened vital signs, misinterprets them as her being afraid of him, and finds him guilty of one of the charges. Eventually he's cleared of the charge and he and Killashandra get back together.
- Departure Means Death: Once you've been infected with the symbiotic organism that allows you to live on Ballybran, you can't leave for very long, or you start going insane and then die. Some can leave for two or three years, others as little as a few months.
- Do You Want to Haggle?: In Crystal Line, a miners' guild looking to buy crystal for com-units try to haggle and emotionally blackmail Lanzecki into giving them a better price. It doesn't work- Lanzecki doesn't give a damn about their losses, and the Heptite Guild has but one stance toward selling crystal: "Here's what we've got, here's the price, take it or leave it, we don't care. If you don't want it, someone else will."
- Driven to Suicide: Older singers who are succumbing to old age or simply tired of life will sometimes go into the Ranges and cut crystal until storms come- and then won't leave. In Crystal Line, Lanzecki does this.
- Entertainingly Wrong: In the first book, Lanzecki tells Killashandra that Guild Leaders are trained young, and also that he had a Milekey Transition. Killa, who has just completed her own Milekey Transition, leaps to the conclusion that Lanzecki is paying attention to her because he wants her to be the next Guild Master, which is incorrect. (He's romantically interested in her.)
- Fantasy Contraception: The symbiote renders all Heptite Guild members sterile, which allows them to screw around without fear of pregnancy.
- Food Porn: Crystal Singers have a heightened metabolism due to their crystalline symbiote, particularly when it's settling in. The upshot is they get to eat. A lot. And never gain weight. A great deal of the books involve Killashandra stuffing herself with gloriously caloric exotic alien foods washed down with copious amounts of beer and wine.
- The Fog of Ages: Crystal Singers have this problem, though it's brought on more by long-term exposure to Ballybran crystal than actual age. Killashandra eventually finds a solution to this problem, accidentally- it's not the crystal, it's the mach storms. Getting the singers to come back to the Guild before the storms hit helps them keep their memories longer.
- Hyperactive Metabolism: Crystal singers are infected with a viral symbiote that gives them Healing Factor, effective immunity to disease, enhanced senses, and prolonged lifespan — and a greatly increased appetite to fuel it all.
- I Just Want to Be Special: Killashandra washed out of her opera training program due to a flaw in her voice in the higher ranges. She quit the school completely, rather than settling for lesser roles or choral work, after learning the flaw had never been mentioned to her and the instructors knew of it.
- Jerkass: Crystal singers are widely perceived as this by the rest of the galaxy, being a minority who holds themselves above everyone else because of what they are and what they can do.
- The Load: Inverted in the third novel where a character is selected for a job specifically because of what he wouldn't be able to do (namely, prevent Lanzecki from committing suicide).
- Multipurpose Monocultured Crop: Killashandra has a tree that grows in the wild perform this function on a chain of islands on a planet the protagonist vacations on. It's called "the polly tree", get it? It provides a surprisingly easy living for Killashandra when she is stranded on a small island for weeks.
- Parental Abandonment: Inverted: Killashandra has/had parents and siblings, but she discards all of them without a thought at the beginning of The Crystal Singer to join the Heptite Guild, rarely thinks of them afterwards, and does not knowingly encounter any relatives again for over two hundred years. The trilogy gives little information as to what her relationships with them were like.
- Reality Ensues: Because of the risks that come with being a Heptite Guild member, the Guild is not allowed to advertise. In addition, crystal is hard to find and singers have to go a long way to find any- and while those with intact minds can remember where they cut crystal, the dementia destroys their memories, and paranoia about claim jumping keeps them from writing down the locations of their claims so that they can track them down, or so that others can take up the claim if they end up dead. By the third book, the Guild's numbers are incredibly low, most singers are either recovering from illnesses or on holiday, and they've got a massive backlog of orders they haven't been able to fill.
- Killashandra has cut crystal longer than Lars, so the effects of singing crystal hit her long before they hit him, and they take a significant toll on their relationship.
- When Killashandra first comes to the Guild, she finds herself in a class of slightly over thirty. Initially, she is on equal and friendly terms with her fellow recruits, but when the symbiont sets in, she hits the jackpot: she got a Milekey Transition(the symbiont sets in without any real negative effects) and is sensitive to black crystal, the rarest kind. As a result, by the time the rest of the recruits have recovered and are out of the infirmary, Killa has already got her cutter and is qualified to go into the Ranges. Soon, she finds and successfully cuts black crystal, while they are stuck indoors because of the dates and soon, the storms will ensue that they can't cut their first crystal for months after Killa has cut hers. By the end of the book, all of her former friends have turned against her.
- The people in charge of Optheria won't let citizens leave the planet. In addition, playing the Optherian Festival organ is the most exalted career someone can aspire to, so there are thousands worldwide competing for limited positions. Those who don't succeed find themselves with no real alternatives and they can't leave the planet and try something else, so it's no surprise that Optheria's suicide rate is sky-high.
- At the beginning of the trilogy, Killashandra's music teacher informs her that despite ten years of hard work and dedication, her voice has an inherent flaw that makes her unsuitable for the starring roles she always wanted. He knew about the flaw all along, and while he'd hoped it could be trained out, he at no point told her about it or warned her when the final assessments came up. So when he later turns up and tries to prevent her from leaving Fuerte to become a crystal singer, she has absolutely no inclination to listen to a word he says.
- Really Gets Around: Killashandra sleeps around a lot over the course of the trilogy, though she eventually finds a partner she sticks with.
- Really 700 Years Old: All Crystal Singers have extended lifespans (along with a healing factor and varying degrees of super senses) due to the native symbiotic organisms that permeate the atmosphere of Ballybran, the source of the crystals. At the end of the third book, Killashandra is revealed to be over 230 years old. (Her first appearance in the first book has her in her early 20s.)
- Sadistic Choice: In the third book, Donalla's parents are stuck- their daughter is dying of a degenerative disease for which there is no cure. Letting her go to Ballybran is the best chance she has of recovering. If they don't let her go, she'll die, but they can be with her. But if she does go, she'll likely recover, but they'll never see her again. They finally let her go, and she does recover.
- Songs in the Key of Lock: In Killashandra, the lock hiding the illegal computer equipment inside the organ is opened by playing a (supposedly) original melody. Fortunately, the protagonist knows Beethoven's fifth symphony, and can play the opening line "accidentally" while tuning it.
- Stepford Suburbia: The planet of Optheria. It's touted as a planet where nature is left intact and everyone is happy, but in reality, it's a dystopia run by a very controlling government that uses subliminal images and refuses to let anyone leave.
- Succession Crisis: At one point it appears that there might be one over the position of Guild Master in the third book (because Singers live a very long time barring severe injury, the matter of selecting a new one comes up so infrequently that the Guild never bothered to create a formal process for doing so), but then the matter gets quickly settled off-page.
- Superpower Russian Roulette: The adjustment to Ballybran's symbiotes follows more of a bell curve: a few die, a few attain the heightened senses needed to become a crystal singer, but most just end up with mild handicaps, mainly in the form of Super Senses they can't turn off. Killashandra won her round, getting both a Milekey Transition (aka the symbiote set in without any of the severe symptoms that usually affect others), and became sensitive to black crystal, the rarest and most valuable kind. She also has a very good sense for mach storms. Some people also just end up dead, but the medical staff tries to filter the people likely to suffer that fate out before they're exposed to the symbiote in the first place.
- The Symbiote: The symbiote has a low success rate for adaptation to human hosts. Those who survive, though, gain a Healing Factor that makes them virtually immortal, barring murder or immediately-lethal accident. Too bad about the slow memory loss, dementia, and paranoia...
- We Used to Be Friends: In Crystal Line, Lars and Killashandra have a serious falling out. They eventually make up, but it takes time.
- Who Wants to Live Forever?: Crystal singers live for centuries, but as time passes, they lose their memories and become deranged shadows of their former selves. Lanzecki eventually becomes tired of life and kills himself.
- Work Hard, Play Hard: The typical Crystal Singer takes insane risks to bring in a huge haul of priceless crystal, then blows all his savings on a spectacular vacation keeping him away from Ballybran for a year or so. Then he returns home so he can save up to do it again.