Ali Hazelwood's second novel follows Marie Curie Kovalenko, a brilliant neuroscientist who lands her dream job leading a NASA mission to Europa, only to discover her ex-boyfriend Levi is the mission's commander. What follows is a workplace romance that oscillates between steamy tension and emotional baggage from their painful college breakup.

Hazelwood excels at writing smart, accomplished heroines who feel genuinely human despite their impressive credentials. Marie's imposter syndrome and anxiety feel authentic, and her passion for science comes through without overwhelming non-STEM readers. The NASA setting is well-researched and engaging, offering a fresh backdrop for romance.

The banter between Marie and Levi crackles with chemistry, and their physical attraction is palpable throughout.

However, the book's pacing suffers from repetitive internal monologue, particularly Marie's constant self-doubt and rehashing of past hurts. The central conflict—what exactly went wrong between them years ago—is drawn out longer than necessary, and when the truth finally emerges, it feels somewhat anticlimactic.

Levi remains frustratingly opaque for much of the book, making it harder to invest in his perspective. The supporting cast, including Marie's best friend and fellow crew members, feels underdeveloped. Romance readers who enjoyed 'The Love Hypothesis' will find familiar territory here: STEM heroines, workplace dynamics, and plenty of sexual tension. The book works best for readers who don't mind repetitive emotional processing and can overlook some plot contrivances for the sake of romantic payoff. Those seeking faster-paced plots or more balanced dual perspectives might find themselves skimming. The novel succeeds as comfort reading for romance fans but doesn't quite achieve the charm of Hazelwood's debut. It's solid genre fiction that delivers on its promises without breaking new ground.