Worlds of Star Trek : Deep Space Nine , Volume Two " Worlds of Star Trek : Deep Space Nine , Volume Two : Trill and Bajor " is a Pocket DS9 novel – part of the and the second novel in the " " series – written by J . Noah Kym and Michael A . Martin and Andy Mangels . Published by Pocket Books , it was first released in . Summary . Unjoined ( Trill ) . Ezri Dax , Julian Bashir , Ro Laren , Cardassian doctor Vlu , and Taran ' atar are on an expedition on Minos Korva , as this is likely the place where Shakaar Edon was infected with the parasite that led to his assassination . They find no living parasites , but an ancient ceramic shard which is identified as being from a planet called Kurl . Later , they are contacted by Kira Nerys , informing them that Ezri has to fly to the Trill homeworld immediately , as there is political unrest – the population has learned of the parasite crisis and demands answers , and Ezri is to be interviewed about the recent events . When Ezri , who decided to bring Bashir with her , arrives on Trill , things have gotten worse ; there are violent outbreaks and demonstrations all over . Ezri and Bashir meet with Hiziki Gard and General Cyl ; Ezri is to testify regarding the parasite crisis , but the situation escalates further when fanatics detonate neurogenic bombs placed around major cities and key symbiont caves , killing hundreds of thousands of joined Trill and unjoined symbionts . Ezri decides to go to the caves of Mak ' ala to search for answers , while Bashir is left to take care for the dozens of Trills injured during the violent demonstrations . In the caves Ezri meets Ranul Keru , a – and one of the symbionts makes clear that she has to dive deep into the waters to find answers . She does so , and finally arrives at a place where very large and apparently very old symbionts dwell – the Annuated . These beings absorb the memories of all the symbionts that come here to die , and therefore know everything about the development of Trill society . Ezri encounters , and is nearly overwhelmed by , several stored symbiont memories . At one point , Ezri experiences the first joining of a symbiont ( named Sef ) twenty - five thousand years before , implanted into an ailing villager ' s post - birth incubation pouch ( which both Trill men and women possess ) by a Trill healer named Hodak . Hodak had noticed the symbionts , which he called " riverworms , " occasionally riding animals and making them stronger , and hoped the symbiont could do the same for the villager . Ezri then learns that , roughly five thousand years ago , Trill was already a race capable of interstellar travel ; at some point they reached the planet Kurl , which proved suitable for both hosts and symbionts . For many years , the Trill outpost there grew , but then an unknown virus killed ten percent of the fifteen million colonists . The Trill of Kurl then engaged in a series of genetic experiments to strengthen the symbionts ' immune system , but the alterations resulted in mad symbionts that dominated their hosts instead of merging with them . When the Trill on the homeworld learned of this , an armada was launched to quarantine Kurl and secure the parasites ' cooperation in finding a cure for the virus and their madness . The Kurl parasites refused to cooperate and attempted to launch four ships from the planet . After destroying the ships , the leader of the Trill armada concluded that the parasites would continue trying to escape and that genocide was the only viable option for safeguarding Trill . Kurl was then bombarded by biogenic and incendiary weapons , and the remaining four million colonists were believed to have been killed . The Trill people , ashamed of the parasites ' creation and the genocide , abandoned space travel . Eventually , a massive cover - up of the events led to the space program and the colony of Kurl being forgotten , as records were destroyed and those with knowledge of the situation were murdered . Meanwhile , Bashir does his best to help treat the casualties of the bombings . The neurogenic energy of the devices drives the symbionts into shock , and all that he and the other doctors can do is to separate them from their hosts – leaving the latter to die while offering the former a chance to survive . Bashir then remembers the medicine that was used to separate Jadzia from Dax in 2370 , which was developed by one Bethan Roa ( " explored in " Reflections " , the Jadzia short story in " The Lives of Dax ) . Against the advice and resistance of his doctor comrades , Bashir applies the drug to one injured joined Trill – thus being able to separate symbiont and host without killing the host . When the caves of Mak ' ala are finally attacked by some violent groups , Cyl is fatally shot ; he manages to jump into the water , when an unconscious Ezri appears from deep below with a broken environment suit . In one last act of sacrifice , he fixes her suit by taking vital components from his own , and then drifts down to deposit his memories with the Annuated before dying . Ezri returns and briefs both Bashir and Trill president Maz on what she learned from the Annuated . The president delivers a planet - wide address in which she shares Ezri ' s discoveries and also reveals that she has undergone Bashir ' s new procedure to have the Maz symbiont removed and taken back to Mak ' ala . The president also states that as she is now unjoined , her surname is no longer Maz but Durghan . Durghan then announces an indefinite moratorium on new joinings , as only ten percent of the symbionts have survived the bombing and they must be given time to breed and increase their numbers . Current hosts have the option of remaining joined until they die , or undergoing the new unjoining procedure ; in either case , the symbiont will then be returned to Mak ' ala to breed . Finally , President Durghan announces political reforms that will put more power in the hands of the unjoined . During their flight back to DS9 , Bashir and Ezri have some lengthy talks – by the end of which it becomes clear to both of them that , in light of all the recent events , they both have grown and developed – but not in the same direction . They split , ending their relationship , but both promising to remain friends . Fragments and Omens ( Bajor ) . While Benjamin Sisko and Kasidy Yates go on living their life on Bajor with their newborn daughter Rebecca , Jake Sisko feels restless . He finally goes away , wandering around Bajor . During his travels , he meets the artist Korena and falls in love with her . After traveling with her to her home city and overcoming obstacles of her former life , the two marry . When Jake introduces Korena to Ben , he recognizes her as Jake ' s wife from an alternate timeline ( " see " ) . It also becomes clear that Ben knows quite a deal about the future , but he can ' t express himself properly . Something big is about to come . . . On Bajor , a village is completely destroyed . Captain Kira Nerys gives chase to the vessel responsible for the attacks , only to learn that she has been fooled ; when the reaches the ship in the Badlands , they are attacked by Cardassian and Dominion weapons . After beaming on the hostile ship , they find nothing but dead people – and a missing escape pod . On the hostile ship , Hovath is a prisoner of someone he apparently knows – but it remains unclear who she is . Both Hovath and the mysterious woman were not found by Kira ' s team . Hovath was doing research on the Celestial Temple , and Ro Laren finally realises that the enemies were after the Orb fragment used to summon the Dal ' Rok . It also becomes clear that there must be a mole on DS9 , as nobody knew of this and it was only logged in Julian Bashir and Miles O ' Brien ' s personal logs . Meanwhile , the political situation around Bajor now being in the Federation begins to emerge ; Ro proposes the re - establishment of a permanent militia liaison officer on DS9 , and Cenn Deska , a Bajoran major is appointed – although reluctant , he finally accepts . Also , prime minister Asarem Wadeen appoints a new Bajoran representative to the Federation council , after the incumbent dies of natural causes – it will be her former husband Krim Aldos , a former follower of the Circle ( now back for good ) .