Dope perhaps seeing reason (12)
I believe the answer is:
intelligence
I believe this is a double definition.
'dope perhaps' is the first definition.
(dope can mean information or intelligence)
'reason' is the second definition.
(thesaurus)
'seeing' is the link.
(Other definitions for intelligence that I've seen before include "Secret information" , "Ken" , "Covert information" , "Information from spies" , "Mind; news" .)