GLEE: “Trio” Photos and Synopsis

Tensions rise and alliances form in this week’s new episode of Glee with guest star Adam Lambert.

As graduation approaches, Tina, Blaine and Sam band together to hold a senior “lock-in” at school, hoping to savor their last chance at hanging out together. But their plans are thwarted when Becky joins unexpectedly. Meanwhile, in New York, Elliot (guest star Adam Lambert) is stuck in the middle between Rachel and Santana’s feud.

“Trio” airs Tuesday, March 4 at 8/7c on FOX.