A shadow agency turns over temple (6)
I believe the answer is:
pagoda
'temple' is the definition.
(I know that pagoda is a type of temple)
'a shadow agency turns' is the wordplay.
'shadow' becomes 'dog' (dogging is a kind of shadowing).
'agency' becomes 'ap' (I am not sure about this - if you are sure you should believe this answer much more).
'turns' says the letters should be written backwards.
'a'+'dog'+'ap'='adogap'
'adogap' reversed gives 'PAGODA'.
'over' is the link.
Can you help me to learn more?
(Other definitions for pagoda that I've seen before include "Pyramid-shaped Asian temple" , "Asian temple with upward curving roof" , "Pyramidal temple with an upward curving roof" , "Hindu or Buddhist temple" , "Hindu temple shaped like pyramid" .)