Marty McFly's red guitar from the original "Back to the Future" is missing and the movie's cast and filmmakers are asking for the public's help.

Four decades after the blockbuster film debuted, the guitar’s creator has launched a search for the iconic Cherry Red Gibson ES-345, asking for the public’s help tracking it down.

A new documentary sheds light on the search for Marty McFly's red guitar from Back to the Future, which has been missing for 40 years.