This is a sweet little movie, deceptively simple and light, yet with some surprising hidden depths. It's deftly written and directed, but what really sets it apart are the performances, in particular a beautifully judged star turn by Timothy Chalamet as Billy, a depressed teen, off his meds and surrendering to a crush on his English teacher while on a weekend away for a drama competition. Chalamet is by turns charming, funny, unsettling, heart-breaking and, when delivering a monologue from Death of a Salesman, simply dazzling. It's a charismatic, nuanced, confident portrayal that proves his Oscar-nominated performance in Call Me By Your Name was no fluke. They could have re-named the movie "Billy" and nobody would have thought anything amiss.