Guided by a crooked man (10)

'guided' is the definition.

'a crooked man' is the wordplay.
I cannot really understand how this works, but
'man' could be 'shepherd' and 'shepherd' is present in the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).

'by' is the link.