Magistrate in bizarre event (5)
I believe the answer is:
reeve
'magistrate' is the definition.
(I've seen this before)
'in bizarre event' is the wordplay.
'in' indicates a hidden word.
'REEVE' is hidden in the letters of 'bizarre event'.
(Other definitions for reeve that I've seen before include "Former shire official" , "Could 'e ever pass a rope through a hole?" , "Comic actor" , "Former magistrate" , "Pass cable through narrow opening" .)