June is a brilliant but difficult girl with a gift for mechanical invention who leaves home to begin grueling astronaut training at the National Space Program. Younger by two years than her classmates at Peter Reed, the school on campus named for her uncle, she flourishes in her classes but struggles to make friends and find true intellectual peers. Six years later, she has gained a coveted post as an engineer on a space station—and a hard-won sense of belonging—but is haunted by the mystery of Inquiry, a revolutionary spacecraft powered by her beloved late uncle’s fuel cells. The spacecraft went missing when June was twelve years old, and while the rest of the world seems to have forgotten the crew, June alone has evidence that makes her believe they are still alive.She seeks out James, her uncle’s former protégé, also brilliant, also difficult, who has been trying to discover why Inquiry’s fuel cells failed. James and June forge an intense intellectual bond that becomes an electric attraction. But the relationship that develops between them as they work to solve the fuel cell’s fatal flaw threatens to destroy everything they’ve worked so hard to create—and any chance of bringing the Inquiry crew home alive.
