In one month and one day Nancy Spungen would have been turning 51 years old, had she not died from a stab wound at age 20 inside the Hotel Chelsea. Since then her death has been shrouded in mystery, with a majority of fingers pointed at Sid Vicious...but is that all about to change? A new documentary on the troubled couple claims the Sex Pistols bassist may have had nothing to do with the death of his lover. Vicious, who died about four months later of a drug overdose, never went to trial but was always the NYPD's prime suspect in the case. Jezebel notes that his mother "who committed suicide in 1996, always believed that her son was innocent...asked film maker Alan G. Parker to help her prove it." Enter Who Killed Nancy?, Parker's new Sherlock Holmes-meets-Sid Vicious type film that traces the evening of Spungen's murder and other possible suspects.

Sid 's innocence is not a new theory however, in fact in 2007 a former bandmate declared: "Sid didn't kill Nancy, I know that for a fact. I know who did it. He was a drug dealer from New Jersey who robbed the flat where Nancy was stabbed. Why would Sid rob himself? This guy's fingerprints were on the knife but New York Police didn't want to get into it. It was a case closed if they pinned it on Sid."

Parker said of his film: “I have strong views on Sid And Nancy so I wanted to make the ultimate, last word movie. It will be 100 minutes of facts and at the end we’re going to turn round and let the audience be the jury." While the twisted punk junkie version of a Romeo & Juliet story will forever be intertwined in Sid and Nancy's, judge for yourself when the film hits theaters next month.