HVAC pros: Does this room have 2 return/0 supply? Cold winter!

[Daniel R.]

Hi all- I wanted to ask if I’m missing something obvious, or if there’s something that can be done to fix my troubles.  I have a second floor bedroom in a colonial style home (with a third floor full attic that’s not insulated).  The summers seem to be a little warmer on my second floor,  but winters are extra chilly in one of the 3 bedrooms on the second floor. Am I incorrect in saying that this bedroom has 2 return vents and no supply blowing in warm air?  Is there a new vent with a damper I can install to get warm air to flow in (and cool air in the summer)?  Thank you for your insight!