Wolfe of detective fiction (4)
I believe the answer is:
nero
'wolfe of detective fiction' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nero that I've seen before include "Barbarous Roman emperor" , "Roman arsonist and fiddler" , "Roman emperor, d. AD68" , "Tyrannical Roman emperor" , "Imperial Roman fiddler" .)