VIDEO: Sneak Peek - GLEE's Grant Gustin Guests on Tonight's 90210

Related: 90210, previews & teasers, The CW

GLEE's Grant Gustin heads over to The CW tonight to begin a guest starring story arc on 90210. Tonight's episode, entitled "Here Comes Honey Bye Bye," airs at 9:00 pm/ET. Check out the sneak peek below!

In the episode, Naomi and Max (guest star Josh Zuckerman) see a marriage counselor to decide if they are going to stay married, while Teddy tells Silver he won't ruin her chance to have a baby if she agrees to his terms. Navid uses Liam's celebrity status to help him get into an elite secret society and Annie rushes to tell Riley (guest star Riley Smith) her true feelings before he undergoes an experimental surgery. Tristan Wilds and Jessica Lowndes also star.

About 90210:

The fifth season of "90210" will find the gang struggling with the biggest issues of their lives. Having put their relatively carefree days at West Beverly behind them and launched themselves into adulthood, they will search for answers to their trials and tribulations with only their friendships to lean on.

They will experience new love and old flames, loyalties being challenged and shocking betrayals. Some friendships will be tested, others will be renewed and new people who will try to infiltrate the close circle of friends. There are some things money can't buy, even in 90210.

The series stars Shenae Grimes as Annie Wilson, Tristan Wilds as Dixon Wilson, AnnaLynne McCord as Naomi Clark, Jessica Stroup as Silver, Michael Steger as Navid Shirazi, Jessica Lowndes as Adrianna Tate-Duncan and Matt Lanter as Liam Court.

"90210" is produced by CBS Television Studios with executive producers Patti Carr ("Life Unexpected," "Private Practice") and Lara Olsen ("Life Unexpected," "Private Practice").