The narrators were terrific! They embodied the characteristics of their characters. So believable despite the quirky SciFi-meets-Fantasy nature of the story.
The author wrote in a manner so true to the characters. There was no extraneous fluff, no boring slow moving moments. Despite the totally impossible premise of the story, because it was stated out front I was willing to be in that place of suspended disbelief. Almost every question I had testing the believability of the storyline was answered by the author. The only unanswered one was how the primary female character could maintain her health despite being cooped up in an apt with window shades closed, for 5 years, without getting a vitamin D deficiency and going stir-crazy from insufficient stimulation.
The growing relationship was not predictable. Instead, it developed out of the problem needing to be solved. And the impossible resolution wasn’t just dropped into the story, but developed as the problem-solving developed.
So go ahead, suspend your disbelief, and watch these folks learn to appreciate each other as they try to solve a huge puzzle via the process of solving many inner puzzles.
P.S. I liked the pure dialogue nature of this book. I used to love reading plays; this was a fleshed out version of that genre.