Theft was a crime that had been committed over several decades in Hill Valley.
- 1885: Buford Tannen and his gang robbed the Pine City Stage.
- 1885: Doc Brown and Marty McFly hijacked Locomotive 131 for a "science experiment" that would result in its destruction.
- 1955: Marty tried several times to steal Grays Sports Almanac from Biff Tannen and from Mr. Strickland's office.
- 1985: A Libyan terrorist group claimed responsibility for stealing plutonium from the Pacific Nuclear Research Facility.
- 1985A: Deviants, or slackers, stole newspapers from Mr. Strickland, with Marty being mistakenly identified by the former high school principal as being the individual responsible.
- 2015: Martin McFly, Jr., Griff Tannen, and his gang attempted to rob the Hill Valley Payroll Substation. Thankfully, due to the efforts of Doc and Marty, this robbery ended up never happening in the first place.
- 2015: Biff Tannen stole the DeLorean time machine.