Crippen certainly had money (5)
I believe the answer is:
pence
'money' is the definition.
(I've seen this before)
'crippen certainly had' is the wordplay.
'had' indicates the answer is hidden within the clue (I've seen 'has' mean this).
'PENCE' can be found hidden inside 'crippen certainly'.
(Other definitions for pence that I've seen before include "Money used to be pounds, shillings and ....." , "Small sum of money" , "Small quantity of money" , "Lowest denomination of British currency" , "p" .)