NBC has released their official description for the April 5 episode of Chuck.
Here it is. Be warned of spoilers!
CHUCK QUESTIONS SHAW’S EMOTIONAL WELL-BEING — BRANDON ROUTH (“SUPERMAN RETURNS”) GUEST STARS — Chuck (Zachary Levi), Sarah (Yvonne Strahvoski) and Shaw (guest star Brandon Routh) reunite to find the Ring operative behind the death of Shaw’s wife. Sarah has faith that Shaw is ready for the mission but Chuck is worried about his emotional stability. Meanwhile, Morgan (Joshua Gomez) considers leaving the Buy More. Adam Baldwin, Scott Krinsky, Vik Sahay and Mark Christopher Lawrence also star.