Hi. Really stuck on these last three to finish this.
36d) unprincipled chap from MI5, when among US counterparts , is a six footer making lots of noise.
?i?a?a
51d) what old retainer will do in Oldcastle
?e?p
66d) coming after all those easy clues, this is too simple
a?s?
Thanks for keep and cicada. !
The s seems to be correct in 66 d. It was instrumental in inflicting pain when one digitally requests a lift with and from the hands - thumbscrew