Glee has a drama- and music-packed show tonight. On “Trio,” be prepared for diva feuds, senior hijinks, and pregnancy drama. Here are the top 5 spoilers that will take place on the March 4 episode.

Adam Lambert has appeared in a behind-the-scenes clip from Glee. The singer currently stars as Elliot in the Fox musical comedy, which returns after a midseason hiatus on February 25. Lambert - who ...