Dickens character, Oliver ....... (5)
I believe the answer is:
twist
I believe this clue is a double definition.
'dickens character' is the first definition.
(I've seen this before)
'oliver' is the second definition.
(I've seen this before)
(Other definitions for twist that I've seen before include "Change - 1960s' dance" , "Bend, distort" , "1960s' dance craze" , "Unexpected event" , "Dickens's 'Oliver - - '" .)