Picture house in misty, cold Maine (6)
I believe the answer is:
cinema
'picture house' is the definition.
(I've seen this before)
'misty cold maine' is the wordplay.
I cannot quite understand how this works, but
'cold' could be 'c' (eg on taps) and 'c' is present in the answer.
an anagram of 'maine' is 'inema' which is within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for cinema that I've seen before include "Filmdom" , "Films, collectively" , "Odeon perhaps" , "Movie theatre" , "Movie house" .)