Will Smith channels grief for his latest role

Will Smith had already begun researching his role for Collateral Beauty when he learned that his father was terminally ill.

Smith said at the film's world premiere in New York on Monday that he had to channel the emotions of that tragic news into a demanding film role. Smith's father, Willard Carroll Smith Jr, died on Nov 7.

Smith stars in the film as a father who suffers a great tragedy and begins to question the point of existence.