Glenda Jackson portrays Neaera Duncan, a frustrated writer who becomes obsessed with freeing the sea turtles.
Ben Kingsley plays William Snow, a bookstore clerk who joins Neaera in her mission to save the turtles.
Richard Johnson takes on the role of Mr. Johnson, a wealthy man who has a personal connection to the sea turtles.
Michael Gambon portrays George Fairbairn, a quirky writer who assists in the turtles' rescue.
Rosemary Leach plays Mrs. Inchcliff, a fellow zoo visitor who becomes involved in the turtle liberation plan.
Eleanor Bron portrays Miss Neap, a librarian who supports the group's unconventional mission.
Harriet Walter plays Harriet Sims, a friend of Neaera who gets caught up in the turtle rescue scheme.
Jeroen Krabbé takes on the role of Mr. Sandor, a mysterious museum visitor who aids in the turtles' release.
Nigel Hawthorne plays Publisher, a book publisher who becomes entangled in the group's plan to free the turtles.
Michael Aldridge portrays Mr. Meager, a zookeeper who provides insider knowledge for the turtle liberation effort.
Peter Capaldi plays Assistant Keeper, a zoo employee who inadvertently assists in the turtles' escape.
Gary Olsen portrays Lorry Driver, a helpful driver who aids the group in transporting the liberated turtles.
Our free email delivers the daily top 10 TV shows and top 10 movies directly to your inbox. Stay ahead of the trends. Sign up below.