Legend says he's still sitting on the pallid bust of Pallas just above Poe's chamber door

Home of The Palace of the Kings of Navarre in Spain

Clearing it every now and then might help with browser efficiency

Manipulate, in a sense (sounds like 5D)

Nine digits that define you, initially

Charlie Brown trick-or-treat treat

Turing and Cumming, for two

"Sin is a thing that writes itself across a man’s face. It cannot be concealed. People talk sometimes of secret ____. There are no such things." (Basil Hallward in "The Picture of Dorian Gray")

Snowy, legally

Necessitate (sounds like 8A)