Answer more questions around start of interrogation, showing no emotion (11)
I believe the answer is:
passionless
'showing no emotion' is the definition.
(I've seen this in another clue)
'answer more questions around start of interrogation' is the wordplay.
'answer more questions' becomes 'pass on less' (skip fewer questions).
'around' is an insertion indicator.
'start of' indicates taking the first letters.
The initial letter of 'interrogation' is 'i'.
'passonless' placed around 'i' is 'PASSIONLESS'.
(Other definitions for passionless that I've seen before include "unfeeling" , "Frigid" .)