“The Circle” will debut in a gala screening at Tribeca ahead of its April 28 release from STX Entertainment. Based on the novel by Dave Eggers, the movie stars Watson (“Beauty and the Beast”) as a young woman hired at a giant Silicon Valley tech and social media company founded by a guru played by Hanks. John Boyega and Bill Paxton are also among the cast of the film co-written with Eggers by director Ponsoldt (“The Spectacular Now,” “The End of the Tour”).