Crossword Genius

A peripheral role in return game (5,4)

Ross

I believe the answer is:

mouse trap

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'game' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'a peripheral role in return' is the wordplay.
'a peripheral' becomes 'mouse' (I can't justify this - if you can you should give a lot more credence to this answer).
'role' becomes 'part' (eg a part or role in a film).
'in return' is a reversal indicator (return can mean to go backwards).
'part' in reverse letter order is 'trap'.
'mouse'+'trap'='MOUSE-TRAP'

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I've seen this clue in The Guardian.
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