Breakdown: In Your House was the 24th In Your House professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF; WWE as of 2002). It took place on September 27, 1998, at the Copps Coliseum in Hamilton, Ontario, Canada. Nine matches were held on the PPV, while three matches were held for the Sunday Night Heat pre-show. The promotional poster featured D-Generation X, whose entrance theme was titled "Break It Down." The event is notable for featuring the debut of Christian.