What would — or wouldn’t — you do to determine with unwavering certainty that you’ve found true, lasting love? That’s the question at the heart of Fingernails, a quiet sci-fi romance that will leave you thinking. The film is set in a world where partners can determine if they’re a genuine love match with a controversial test that involves each of them pulling out a fingernail. (Yes, that’s as gross and awful as it sounds.) Enter Jessie Buckley — known for roles in films like The Lost Daughter and I’m Thinking of Ending Things, and is quickly becoming an actor I’d watch in anything — who stars as Anna, a woman who receives a “positive” test with her current partner Ryan (The Bear’s Jeremy Allen White), but starts to have questions about their relationship. So she decides to secretly get a job at an institute that uses this technology with the goal of helping other couples grow their bond while also learning about how to strengthen her own relationship. But there she meets Amir (the charming Riz Ahmed), someone she can’t help but feel increasingly drawn to.