The episode is called “Forever Hold Your Peace,” and I don’t know if it’s a “surprise return” so much if it’s written out like that in the description.
THE SURPRISE RETURN OF TEDDY — Naomi (AnnaLynne McCord) shocks everyone when she announces she won’t be able to oversee Max’s (guest star Josh Zuckerman) wedding because she has accepted a job in New York and will be leaving immediately. Teddy (guest star Trevor Donovan) comes back to town and Dixon (Tristan Wilds) rushes back from touring to give his relationship with Adrianna (Jessica Lowndes) another try, then fails to show up at their meeting spot. Meanwhile, Silver (Jessica Stroup) feels like she has to choose between Navid (Michael Steger) and Liam (Matt Lanter) and makes a life-changing decision. Gillian Zinser and Shenae Grimes also star. Harry Sinclair directed the episode written by Lara Olsen (#424).