Terrence Howard & Charlie Hunnam are already among the cast for the project, which is written & directed by first-timer Matthew Chapman.
The story finds a man (Hunnam) standing on a high- rise ledge and threatening to jump by midday as a police officer (Howard) attempts to talk him down, says The Hollywood Reporter.
“The Ledge examines the different & sometimes dangerous beliefs people adopt as a means of surviving emotional trauma,” said Chapman of his debut feature film.