35. Ringleader = R.
50. A film.
53. Criminal means make an anagram.
63. Don't know - hint requested.
78. A tricky one. Anagram. Land's End = S. Torture instrument. Obscure (of course).
79. A word for the small amount left in a drinking glass (as in dregs, etc). In Roget, Chambers and Collins.
87. Anagram. Electric lead = E. Term for an animal that walks on its toes (as opposed to eg on its palms).
88. Don't know. Hint requested.