Lay hold of Kate, perhaps (4)
I believe the answer is:
take
'lay hold of' is the definition.
(I've seen this before)
'kate perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'kate' anagrammed gives 'TAKE'.
(Other definitions for take that I've seen before include "film sequence" , "Remove; accept" , "Perspective" , "Appropriate" , "Teak (anag.)" .)