In old movies, maybe Peter turns up with Flynn (5)

I believe the answer is:

errol

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'flynn' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for errol that I've seen before include "-- Flynn, Hollywood actor" , "- Flynn, US film actor" , "Old film star" , "- Flynn, twentieth century film actor" , "- - Flynn, film star" .)

I've seen this clue in the Evening Standard.

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