Abnormal? Laura Tunn treated? (9)
I believe the answer is:
unnatural
'abnormal?' is the definition.
(I've seen this before)
'laura tunn treated?' is the wordplay.
'treated?' indicates anagramming the letters.
'laura'+'tunn'='lauratunn'
'lauratunn' with letters rearranged gives 'UNNATURAL'.
(Other definitions for unnatural that I've seen before include "Forced" , "Strange" , "Affected" , "Lacking normal feelings of, say, affection" , "Annual rut may be abnormal" .)