Leave with detective before finale - that’s a bit of good fortune (7)
I believe the answer is:
godsend
'bit of good fortune' is the definition.
The answer and definition can be both related to property as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'leave with detective before finale' is the wordplay.
'leave' becomes 'go' (to go is to depart or leave).
'with' means one lot of letters go next to another.
'detective' becomes 'DS' (detective sergeant).
'before' means one lot of letters go next to another.
'finale' becomes 'end' (the end of a story or show).
'go'+'ds'+'end'='GODSEND'
'that's a' acts as a link.
Can you help me to learn more?
(Other definitions for godsend that I've seen before include "Very opportune thing" , "Something very opportune" , "Stroke of good fortune" , "Boon - blessing" , "Stroke of luck" .)