In a January 18 interview with TV Guide, Cory Monteith (Finn) officially confirmed that Sam is already filming on set, and he dropped a couple of tantalizing hints as to what exactly his role might entail.
“Yeah, he's here today. I can confirm he's here, but we haven't been formally introduced yet,” Cory told the site.
So is Sam’s character a relative ofPuck’s (Mark Salling), as speculated earlier? “I do not know if that's true yet. He joins the show in the Valentine's Day episode,” Cory said.
His final tease gave very little away, but definitely was enough to get our heads spinning. Cory continued, “His is a very interesting role and it ties into a lot of preexisting storylines. It feels very natural. It's a smart way to bring him into the show.”