I love a good time travel story – and I loved this one so much that I finished it in two days. (To be fair, it’s a short book.). The author works with two well-worn tropes — time travel and also the possibility that we are living in a simulation (think The Matrix). How would we know if we were living in a simulation? And how can time travel to the past take place without altering the present?

In addition to these, there are many references to pandemics throughout the book, to lockdowns and vaccines. Sea of Tranquility may be largely set in the future, but it is also very much a book of our time. Highly recommended.