Hell in a Cell is an annual gimmick pay-per-view (PPV) and WWE Network event, generally produced every October by WWE since 2009. The concept of the show comes from WWE's established Hell in a Cell match, in which competitors fight inside a 20-foot-high roofed cell structure surrounding the ring and ringside area. The main event match of the card is contested under the Hell in a Cell stipulation.[2][3][4] The 2016 event was the eighth event under the Hell in a Cell chronology and was held on October 30 at the TD Garden in Boston, Massachusetts.