Wolf-man in only chapter that needs revision (11)

I believe the answer is:

lycanthrope

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'wolf-man' is the definition.
I can't judge whether this definition defines the answer.

'only chapter that needs revision' is the wordplay.
'that needs revision' is an anagram indicator (I've seen 'needing revision' mean this (I've seen this in other clues)).
'only'+'chapter'='onlychapter'
'onlychapter' with letters rearranged gives 'LYCANTHROPE'.

'in' acts as a link.

Can you help me to learn more?

(Another definition for lycanthrope that I've seen is " monster".)

I've seen this clue in The Times.

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