A wife says she shot her husband in self-defense. Police say she’s a killer. Who's correct? "48 Hours" correspondent Peter Van Sant investigates. This week's "48 Hours" begins with a surprising twist – the verdict is revealed in the first few minutes of the show. Correspondent Peter Van Sant explains why. Watch his report, "The Verdict" Saturday, April 25 at at 10 p.m. ET/PT on CBS.