I really appreciate how time travel is envisioned and portrayed in this book. It has no logic holes and it avoids paradoxes, e.g. the future is predetermined here. It doesn't make up too much technical details to explain how it works, because techno babble is not what this story is about.

It is, as the name suggest, about impact of time travel on human psychology, but also sociology. It envisions a culture emerging inside the organization of time travelers. It explores what taboos it develops, what language, how it operates considering the foresight available to it, etc.

On a backdrop of this thoughtful world building Mascarenhas explores inter-personal relationships of her characters. There's a revenge subplot, a romance subplot, a power struggle subplot. They all intertwine wonderfully between time periods and characters; often the same character coming from different time periods. It does take a little bit of concentration to track it all, but doing so is super rewarding.

The characters are endearing. The plot is riddled with puzzles and mysteries. The concept and world building are thoroughly thought through. I wholeheartedly recommend this book to anyone interested in Sci-Fi more broadly, and specifically soft science fiction.