Mary Stein

When Sal's Pizza burns down and the fire marshal (guest star Patton Oswalt) quickly assumes that the owner is the prime suspect in the investigation, Jake does everything in his power to prove him wrong, even if it means stepping out of his jurisdiction. Meanwhile back at the precinct, chaos ensues when a computer virus publishes everyone's browser history.

The Enterprise crew travels between the 19th and 24th centuries in an attempt to prevent Data's death in 19th century San Francisco.

Blaine believes he has the best plan to win Nationals, but he doesn’t take the glee club’s criticism too well when the students accuse him of being too controlling. Over in New York, Kurt also runs into control issues when the band disagrees over the venue of their first official gig that Kurt booked. Meanwhile, Sue reveals the story behind her iconic tracksuit and gets in touch with her feminine side. Musical performances include "Into The Groove", “You’re My Best Friend”, “Nasty”, “Rhythm Nation”, “Cheek to Cheek”, and "The Fox".

As Al and Griff lose their jobs on Christmas Eve, Marcy and Jefferson's entry in a neighborhood contest is sabotaged by Kelly and Bud.

Addie's eighth grade life is a well oiled machine… until Jolene (from "Pink Guitar") gets kicked out of St. Agnes, and transfers to Rocky Road where she becomes Addie's new bestest, best friend.  Addie's life is turned upside down, so she plots to get Jolene kicked out of school.