Spookier, creepier (6)
I believe the answer is:
eerier
(Other definitions for eerier that I've seen before include "Weirder" , "Stranger" , "More weird" , "More strangely frightening" , "More mysterious" .)
I believe the answer is:
eerier
(Other definitions for eerier that I've seen before include "Weirder" , "Stranger" , "More weird" , "More strangely frightening" , "More mysterious" .)