Badd Blood: In Your House was the eighteenth In Your House professional wrestling pay-per-view event produced by the World Wrestling Federation and presented by PlayStation, that took place on October 5, 1997, at the Kiel Center in St. Louis, Missouri. 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" prior to the pay-per-view being broadcast. The event was also notable for the on-screen debut of The Undertaker's brother Kane, who interfered in the inaugural "Hell in a Cell" match, as well as for Vince McMahon's last pay-per-view appearance as the WWF's lead commentator and this event has been cited as one of the few beginnings of the Attitude Era.

The tournament to determine the new WWF Intercontinental Champion was held between September 8 and October 5, 1997, with the finals occurring on October 5 at the pay-per-view. The tournament brackets were:

Notes:
¹Ken Shamrock initially won the match. But he was injured so Faarooq advanced.

A Legends Ceremony was held during the event to honor some legends of St. Louis Wrestling Club. It was hosted by Jim Ross and honored wrestlers, including Harley Race, Jack Brisco, Dory Funk, Jr., Gene Kiniski, Terry Funk, Lou Thesz, and promoter Sam Muchnick. Also, at the top of the show, as the Nation of Domination was preparing for their match, Vince McMahon announced, as had been already announced on the Free For All show directly preceding Badd Blood, that Brian Pillman had died earlier that day (October 5, 1997). This was the last pay-per-view event that McMahon called in his position as the WWF's lead broadcaster, as he left the broadcast team altogether following the events of the next month.

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