Rear defrost not working & water leak in back

I have a 2009 Prius. The rear defrost has stopped working, but the light on the dash will still work. I have checked and tested the fuses and they seem to test fine. Any suggestions?

Also, when there is a heavy rain, I've noticed water dripping from the back little light on the driver's side. I've put a small bucket in the cut out. I can't figure out where the water is coming from. Any suggestions?

Thank you, in advance!