'Dark Phoenix' and 'Pets 2' Both br Underperform During Disappointing br Box Office Weekend 'Dark Phoenix' earned $33 million at br the domestic box office, the lowest br debut for an 'X-Men' film ever. 'The Secret Life of Pets 2' led the br U.S. box office with $47.1 million, one of the lowest opening weekends for br animation studio Illumination and Universal. 2016's 'The Secret Life of Pets' earned br $104.3 million in its opening weekend. 'Dark Phoenix' is the final installment in an br 'X-Men' franchise that began in 2000. The film currently has just a 22 rating on br Rotten Tomatoes and a B- CinemaScore. 'Dark Phoenix' marks br Sophie Turner's debut br with the franchise as Jean Gray. Amazon Studios' 'Late Night,' starring br Mindy Kaling, made its debut at four br locations in New York and Los Angeles. The film earned an br impressive average of $62,414 br per-theater for $249,654 total.