The world premiere of Freakonomics will close the 9th Tribeca Film Festival on April 30 as festival top brass unveiled three gala screenings.

The documentary adaptation of Steven Levitt and Stephen J Dubner’s popular economics bestseller features directorial contributions from Alex Gibney, Morgan Spurlock, Eugene Jarecki, Seth Gordon, and Rachel Grady and Heidi Ewing. Chad Troutwine and Green Film Company’s Chris Romano and Dan O’Meara produced.

The world premiere of Summit Entertainment’s romance Letters To Juliet starring Amanda Seyfried and Vanessa Redgrave will screen on April 25.

Gary Winick directed the story of a young American in Verona, Italy, who persuades the writer of a 1957 letter seeking romantic advice to travel to Italy in search of her long-lost love. The move brings both the letter writer and the young girl love they never imagined.

A special screening of the international premiere of Olivier Dahan’s My Own Love Song stars Renee Zellweger and marks Dahan’s first English-language film and his follow-up to La Vie En Rose.

Zellweger plays a wheelchair-bound woman who convinces a loveable oddball played by Forest Whitaker to embark on a road trip. Nick Nolte, Elias Koteas and Madeline Zima add support and Bob Dylan provides original music.

“This trio of films embodies the spirit of diversity that has defined Tribeca through the years,” the festival’s executive director Nancy Schafer said. “Audiences will be charmed by Letters To Juliet, moved by Jane’s emotional journey to redemption in My Own Love Song and glued to their seats during the riveting Freakonomics, which marks the return of some of today’s best documentary film-makers to Tribeca.”