Confused in the fog with a doll (8)
I believe the answer is:
mistaken
'confused' is the definition.
('mistake' can be a synonym of 'confuse')
'fog with a doll' is the wordplay.
'fog' becomes 'mist' (mist is a kind of fog).
'with' says to put letters next to each other.
'doll' becomes 'ken' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'mist'+'a'+'ken'='MISTAKEN'
'in the' acts as a link.
Can you help me to learn more?
(Other definitions for mistaken that I've seen before include "Wrong (in judgement)" , "'Wrong, misguided (8)'" , "Wrongly understood" , "In error in mankiest way" , "Wrong, incorrect" .)