Rescued organ dumped in river, by the sound of it? (9)
I believe the answer is:
delivered
'rescued' is the definition.
('deliver' can be a synonym of 'rescue')
'organ dumped in river by the sound of it?' is the wordplay.
'organ' becomes 'liver' (liver is a kind of organ).
'dumped in' is an insertion indicator.
'river' becomes 'dee' (River Dee).
'by the sound of it?' becomes 'd' (I can't justify this - if you can you should believe this answer much more).
'liver' going into 'dee' is 'delivere'.
'delivere'+'d'='DELIVERED'
Can you help me to learn more?
(Other definitions for delivered that I've seen before include "Brought to a destination" , "Produced new issue" , "sent to the house" , "Rescued" , "Handed over" .)