Across

 2  Unlucky number
 4  For pretending to be
     someone else
 6  Witches ride one of these
 9  Bobbing for _
10  ___ or treat
12   Wrapped in bandages
      in an Egyptian coffin
13  Scary flying mammal

Down

 1  Comes back to haunt you
 3  Month Halloween falls in
 5  Witches cast these on you
 7  This hides your face
 8  It weaves a big web
11  An unlucky black animal