Appeared to interview some medium (6)
I believe the answer is:
seemed
'appeared' is the definition.
('seem' can be a synonym of 'appear')
'interview some medium' is the wordplay.
'interview' becomes 'see' (I've seen this in another clue).
'some medium' becomes 'med' (I can't explain this - if you can you should give a lot more credence to this answer).
'see'+'med'='SEEMED'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for seemed that I've seen before include "Was appearing" , "'Appeared, gave the impression (6)'" , "Appeared, looked" .)