Emily St. John Mandel returns with her third novel, a story about parallel worlds and alternate possibilities. In 1912, a young man hears a violin playing in the Canadian woods, an event that a videographer captures in the present-day. Two hundred years later, a famous writer includes a similar haunting scene in one of her books. Decades later, Gaspery-Jacques Roberts is hired to investigate this anomaly in time, one that has the potential to disrupt the universe's timeline.

At under 300 pages with a large font and small size, Sea of Tranquility is an extremely short read. Mandel brilliantly writes literary science fiction, and Sea of Tranquility has a gorgeous lyrical presence to it. The story is simple and unrushed, laying out each scenario and then tying it all together as Gaspery-Jacques' time-traveling contemplates the nature of destiny and fate.