Recent pie ruined, most shocking here! (9)
I believe the answer is:
epicentre
'most shocking here' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'recent pie ruined' is the wordplay.
'ruined' is an anagram indicator.
'recent'+'pie'='recentpie'
'recentpie' with letters rearranged gives 'EPICENTRE'.
Can you help me to learn more?
(Other definitions for epicentre that I've seen before include "Point directly above the focus of an earthquake" , "hub of quake" , "Shakiest point" , "Quaking heart" , "focal point" .)