It introduces a wrong denial (4-2)

I believe the answer is:

lead-in

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'it introduces a' is the definition.
The definition suggests a singular noun which matches the answer.

'wrong denial' is the wordplay.
'wrong' is an anagram indicator.
'denial' anagrammed gives 'LEAD-IN'.

Can you help me to learn more?

(Other definitions for lead-in that I've seen before include "Introduction, preamble" , "Introduction to subject" , "Introductory passage" .)

I've seen this clue in The Globe and Mail.

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