Badd Blood: In Your House

Badd Blood: In Your House was a professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF, now WWE). It was the 18th In Your House event, and inaugural Bad Blood and it took place on October 5, 1997, at the Kiel Center in St. Louis, Missouri. Seven matches were contested at the event.

The event was notable as it featured the promotion's first-ever Hell in a Cell match, which pitted The Undertaker against Shawn Michaels and saw the debut of Undertaker's storyline brother Kane, who interfered in that match by hitting the "Tombstone Piledriver" on the Undertaker, which allowed Michaels to win and become the number one contender for the WWF Championship against reigning champion Bret Hart at Survivor Series. The show would also mark the last time Vince McMahon was featured as the chief broadcaster of the commentating team for a pay-per-view event and started his career as an on-screen professional wrestler using a gimmick known by the ring name Mr. McMahon, based on his real-life persona.

This was one of the In Your House events which later became the title of an annual pay-per-view, replacing the method at the time of making new names for all events aside from the "Big Five" (Royal Rumble, WrestleMania, King of the Ring, SummerSlam, and Survivor Series). Unlike the other former In Your House events that also became PPVs over the following year after In Your House's discontinuation, Bad Blood (stylized with one "d" in "Bad") did not return until June 2003, becoming the annual June PPV; however, it was short-lived as the event was discontinued after the 2004 event, but was later revived in October 2024 on the 27th anniversary of this first event.

The show's theme song was the first theme song of former WWE star Steve Blackman.

In Your House was a series of monthly professional wrestling pay-per-view (PPV) events first produced by the World Wrestling Federation (WWF, now WWE) in May 1995. They aired when the promotion was not holding one of its then-five major PPVs (WrestleMania, King of the Ring, SummerSlam, Survivor Series, and Royal Rumble), and were sold at a lower cost. Badd Blood: In Your House was the 18th In Your House event, and took place on October 5, 1997, at the Kiel Center in St. Louis, Missouri.

The main feud heading into Badd Blood involved The Undertaker, and Shawn Michaels. The rivalry dated back to August at SummerSlam, when Michaels served as special guest referee for the WWF Championship match between The Undertaker, and Bret Hart. Michaels tried to hit Hart with a chair, but accidentally struck Undertaker instead, causing Hart to win the match and the title. After a previous match between Undertaker and Michaels to determine a number one contender for the WWF Championship ended in a double Disqualification at Ground Zero: In Your House, a cage match called a Hell in a Cell match was scheduled for Badd Blood, which would be the first-ever Hell in a Cell match held by the WWF.

Undertaker's former manager, Paul Bearer, had his face burned by a fireball thrown by Undertaker at In Your House 14: Revenge of the 'Taker; Bearer compared the incident to a fire that burned down the funeral home that killed The Undertaker's parents and possibly his younger half-brother; for which he blamed The Undertaker, but Undertaker denied it. Bearer claimed to have proof in the form of Undertaker's half-brother Kane, who was alive after all. Bearer revealed that he had raised Kane after the fire and that Kane now was coming to the WWF to challenge Undertaker.

On the afternoon of the event, Brian Pillman, who was scheduled to face Dude Love on the show, was found dead in his hotel room. The announcement was made to fans during the half-hour "pregame show" before the pay-per-view was broadcast.