Prepare for some major keggers on 90210, fans. The adults are almost all gone!

TV Line has broken the news that Lori Loughlin and Ryan Eggold will NOT return for season four of this CW series, as they follow in the vanquished footsteps of Rob Estes and Jessica Walter.

No word yet on how Deb and Ryan will be written out, but they are (secretly) involved right now. Moreover, the show will graduate its West Beverly seniors this spring, meaning the fourth season will focus more on college and less on teachers/parents. It's conceivable neither character even gets an official exit under those circumstances.

Will Deb and Ryan's romance takes them away from 90210? Tune in. Find out. Discuss in our forum.