Fans of the movie “Free Willy” are outraged to learn that the real whale who played Willy lives in a tiny pool at an amusement park in Mexico City. So well-intentioned experts embark on an epic science experiment to try to teach one celebrity orca how to be free — while the world watches. Sign up for our newsletter to see photos and videos of Keiko, and get a behind the scenes look at the making of The Good Whale. Sign up at nytimes.com/serialnewsletter Subscribers to the New York Times can listen to all episodes of The Good Whale, and access the full archive of other Serial Productions and New York Times podcasts on Apple Podcasts and Spotify. Subscribe at nytimes.com/podcasts Have a story pitch, a tip, or feedback on The Good Whale or other shows from Serial Productions? Email us at serialshows@nytimes.com