Related Clues:

• River that reaches the North Sea at Aberdeen
• With 36-Across, Kaitlin Olson's role on 'It's Always Sunny in Philadelphia'
• 'Pariah' filmmaker Rees
• Animal losing tail in river
• “Look at Me, I’m Sandra ___” (“Grease” song)
• Kiki, e.g
• 'Pariah' director Rees
• Wallace of “E.T.”
• "Blue (Da Ba ___)" (Eiffel 65 hit)
• Actress Ruby or Sandra
• Apt name for a bad student?
• Not quite the worst grade
• One of two in the middle of "middle"
• Ruby of "A Simple Wish"
• Actress Ruby who emceed 1963's March on Washington