Thanks to Ilenya for the heads up.
Now that Chord Overstreet is reprising his role as Sam on the Fox drama, fans will be introduced to his mom Mary Evans, played by Tanya Clarke (Guiding Light). EW has learned exclusively that Clarke, who has also appeared on shows like The Defenders and NCIS: Los Angeles, will show up in the Dec. 6 episode and may recur.
It’s already been revealed that John Schneider (Smallville) will play Sam’s dad. Hey, the tow-headed teen had to get that blond hair somewhere!
Overstreet signed up for a multi-episode/recurring arc on the show, and will reunite with kids of McKinley High in December. Sam’s departure was explained in the season 3 premiere by his father getting a job in another town
Source: EW
Streaming Options
