VIDEO: First Look - Next Week's All New 90210

On next week's all new episode of 90210, titled, "Brother From Another Mother," Liam (Matt Lanter) experiences some symptoms of post-traumatic stress disorder while preparing to testify against Ashley (guest star Natalie Morales), while Annie (Shenae Grimes) is furious when Naomi (AnnaLynne McCord) tracks down their half-brother Mark (guest star Charlie Weber), a chef who owns a gourmet food truck. Wolfgang Puck has a cameo role as a celebrity judge in a cooking competition. Silver (Jessica Stroup) is overbearing with her surrogate Michaela (guest star LynDon Smith), whom Dixon (Tristan Wilds) discovers has an amazing singing voice. Trevor Donovan, Michael Steger and Jessica Lowndes also star. Benny Boom directed the episode written by Chris Atwood (#514). "Brother From Another Mother" airs February 18 at 9PM on The CW.

Check out a first look below!