Related Clues:

• Last word of the year, often
• Mercury or Saturn, but not Mars
• Series opener
• Jam ingredient?
• Afternoon hour
• First of all
• G.M. or MG product
• Part of H.M.S.
• Sum of the parts
• River's path, possibly
• Sonata, e.g.
• See 5-Down
• See 17-Down
• See 37-Down
• Series opener?