隐藏之物6.4

When a young man sees his fiancée struck and killed by a hit-and-run driver, he is inconsolable. When questioned by the police, he is unable to remember anything that he saw, even though he wants very much to have the driver caught. A week later, he is visited by a stranger who claims he can ****. The visitor tells him that his own son died in the same way, and he offers to hel...