ABC has unveiled its top-secret, made-for-TV movie about avian flu for the May sweeps rating period.

"Fatal Contact: Bird Flu in America" stars Stacy Keach, Joely Richardson, Ann Cusack and Justine Machado in a tale about what could happen if the virus starting moving among residents of the United States, the New York Post reported Tuesday.

Co-producer Diana Kerew said they kept the film under wraps because of "its topicality."

"The world changes very quickly, and we wanted to make sure at the point we were ready to unveil (the film) that we were accurate and up-to-date," she told the Post.

Although the film airing May 9 is fictional, "We've included a lot of information we believe people need to know," co-producer Judith Verno said.