Show over, having left one inside (6)
I believe the answer is:
oliver
'show over having' is the definition.
I can't judge whether this defines the answer.
'left one inside' is the wordplay.
'left' becomes 'over' (I've seen this before).
'one' becomes 'li' (I've seen this in other clues).
'inside' indicates putting letters inside.
'over' enclosing 'li' is 'OLIVER'.
Can you help me to learn more?
(Other definitions for oliver that I've seen before include "Paladin (with Roland)" , "stage show" , "- Goldsmith (She Stoops to Conquer)" , "Dickens-based musical" , "Musical from Dickens novel" .)