Revenant
Revenant is a 2021 DS9 Gallery Books novel by Alex R. White. It is set during the  series and focuses on Kira Nerys and Jadzia Dax.

Summary
An all-new novel based on the landmark TV series  from the acclaimed author of A Big Ship at the Edge of the Universe!

Jadzia Dax has been a friend to Etom Prit, the Trill Trade Commissioner, over two lifetimes. When Etom visits Deep Space Nine with the request to rein in his wayward granddaughter Nemi, Dax can hardly say no. It seems like an easy assignment: visit a resort casino while on shore leave, and then bring her old friend Nemi home. But upon arrival, Dax finds Nemi has changed over the years in terrifying ways... and the pursuit of the truth will plunge Dax headlong into a century's worth of secrets and lies!

Background information 
 This novel was announced in September 2020, alongside Shadows Have Offended.  An excerpt was published on StarTrek.com on 21 October 2021. 
The author commented: "I was funny because I'd often told my agent like, 'I don't think I could write for Star Trek, there's just so much to know and so much canon.' When he called and was like, 'Yeah, they want you to write for Star Trek,' I was like, 'I don't know about this because I really only know about Dax in Deep Space Nine and I don't think they're still making those books.' And he said, "Good news, they're totally making those books and that's exactly what they want you to write." 
White relished revisiting the character of Jadzia, many years since her first appearance: "From there, it was like, if I'm going to do a Dax book, first of all, we wanted to go watch a list of all the greatest hits of Dax. I really loved seeing her evolve, Jadzia was my first Dax. When you have a character who's Trill, you can't resist doing a multi-life storyline and I think that's something that I would've enjoyed seeing a lot more exploration done on in the series. Unfortunately, I think they killed off a character that a lot of us really appreciated, but I love that kind of stuff. I love Dax going on trial for murder from a previous life and things like that. I always thought those were really cool questions to ask. One of the things I like about her is that she's a really positive character, but she's not a pushover in any way. She's so smart that you have to work harder as a writer to be as smart as she is, which is great because I have unlimited time to come up with one-liners, right? I can sit there and stare for a long time, but it's difficult because a lot of characters rely on cynicism or betrayal or sort of these darker, more negative emotions to generate their interests. Jadzia is an interesting character because she's so unequivocally good and friendly and cool and helpful, but she's still not perfect. Trying to balance that is tough because she's really not like other characters. She's the kind of person I think a lot of us would really like to know." 
The author also liked depicting Kira: "One of the things that I like about Kira is that she is a resistance fighter. When I was just getting out of high school, I worked at this place where there was a woman who had fought in a revolution. I didn't know that at the time, but she was this very cool, awesome, professional woman that I really looked up to and then one day it came up that she'd been in a revolution. And I completely recontextualized her. I feel like there's a lot of that same energy with Kira for me where everybody thinks of her as, 'Oh, you're station operations, you keep the trains running, and all this other stuff.' And it's like, yeah, there's a lot though that's going on. She's been through some things, man. So it's funny because her attitude, I think, towards the world is a lot more… the rules are more malleable for her than for other characters. I really appreciate having her around for when those rules need to be broken a little bit." 
The author believes there are more Trill stories to be told: "Absolutely, I would love to write more Trill stories because they're so interesting and the implications in them are so interesting, but I've always enjoyed all the different cultural perspectives in Star Trek. And I think that you can really just point to any of the myriad colorful worlds that have been created and say “what happens there” and you can find a novel pretty quickly. So, my two cents is it would be pretty easy to write some more Star Trek books." 
The novel is set just after , when Worf joined the crew. White commented: "That's one of the greatest stories, the Jadzia-Worf love story. I set the novel at the beginning of that, right before that, because I love that tension... And it was also really great to make references to the budding relationship between her and Worf"
The novel is dedicated to Lisa Banes.

The novel is the first to be set during the series since Hollow Men in 2005. Revenant retains the redesigned DS9 logo that was first used for Star Trek: Deep Space Nine - Avatar.

External link 
 
Petkoff reads an excerpt

Novels
Audiobooks