X

"X" is the first episode of Season Ten of Criminal Minds.

Trivia

 * X's air-date of October 1, 2014, marks the first time a season for the show has premiered in a month other than September.
 * Curiously enough, X is Episode 10.1 of the season, and is scheduled to premiere on 10/1. This may be a mere coincidence, as the reason for the delay is to coincide the season premiere with a new show that will follow it at 10:00 p.m., as well as the fact that the final Wednesday of September (the usual air-date for the show's season premieres) was crammed with a 90-minute season premiere for Survivor and the season finale for Big Brother.
 * X is the Roman numeral for 10. It is unknown if it is a coincidence or a subtle reference to the fact that this episode starts off the show's tenth season.