OFFICIAL AUTHOR BIO: Sylvie Cathrall writes stories of hope and healing with healthy doses of wonder and whimsy. She holds a graduate degree in odd Victorian art and has handled more than a few nineteenth-century letters (with great care). Sylvie married her former pen pal and lives in the mountains, where she dresses impractically and dreams of the sea. 

FORMAT/INFO: A Letter to the Luminous Deep was published by Orbit Books on April 25th, 2024. It is available in paperback, ebook, and audiobook formats. 

OVERVIEW/ANALYSIS: One year ago, a disaster struck the underwater residence known as the Deep House, leaving its two inhabitants, E. and Henerey, presumed dead. After a year of grieving, E.'s sister Sophy and Henerey's brother Vyerin begin to investigate the events that led to their siblings' death. Sifting through correspondence between the many individuals involved, the two begin to uncover a much more ominous mystery than they expected.

A Letter to the Luminous Deep is a charming underwater tale that ultimately dragged too much to keep me hooked. This is a very slow-paced affair, told largely through letters written in the style of the late 1800s. This is certainly a difficult form of novel to pull off. For one, there are occasional moments where the author has to do some narrative contortions to explain why certain events or conversations were put to paper. While I understand the necessity in order to convey certain key information to the reader, it does strain the credulity a bit in some places.

That said, there were also numerous ways the narrative structure worked. I did enjoy the subtle ominous foreboding that builds up over the course of the story. Certain innocuous observations of things that are "off" in the world begin to create an unsettling pattern, especially as we have a rough idea of how events end. Several people each have a piece of the puzzle, but it's only in assembling those pieces by collecting these letters that they (and the audience) start to see the whole picture.

I also liked the slow romance between the two characters of E. and Henerey. Each is a shy or reticent person for various reasons. Through the letters, however, we can see two people being understood in a way they haven't before. The use of aborted "first drafts" of letters also lets us see a little glimpse of their respective nervousness as they try to fumble through how to address a person they've developed feelings for, even though they've never met in person.

The author has also built up a fascinating maritime culture. Some calamity 1000 years ago left this fantasy world with minimal inhabitable land. As a result, whole peoples live one boats or floating collectives. As our focus in this story is on the colleges and scholarly life of these people, most of the details do remain frustratingly out of sight, but perhaps not unreasonably. The people writing the letters are focused on their own narrow slice of life, not on the workings of society as a whole.

CONCLUSION: While I did enjoy my read of A Letter to the Luminous Deep overall, I found it struggled to hold my attention towards the end. The narrative structure of letters just dragged events out. We have a good idea of what happened some thirty pages or so before the ending, with the rest of the characters trying to catch up through their long-winded missives. As someone who struggles with slow books, ultimately this just didn't click for me. While the set up for part two of the duology is intriguing, this tale simply isn't my cup of tea.