Victoria and Timothy in casualty (6)
I believe the answer is:
victim
'casualty' is the definition.
(both can mean someone injured or killed)
'victoria and timothy' is the wordplay.
'victoria' becomes 'vic' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' is a charade indicator (letters next to each other).
'timothy' becomes 'tim' (I've seen this in other clues).
'vic'+'tim'='VICTIM'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for victim that I've seen before include "Casualty, oppressed person" , "One who suffered an attack" , "One made to suffer" , "Person who has suffered" , "Person who suffers accident or crime" .)