Swindle involving secret batch of cards (10,5)

I believe the answer is:

confidence trick

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'swindle' is the definition.
(I know that swindle can be written as confidence trick)

'secret batch of cards' is the wordplay.
'secret' becomes 'confidence' (confidence is a kind of secret).
'batch of cards' becomes 'trick' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'confidence'+'trick'='CONFIDENCE TRICK'

'involving' acts as a link.

Can you help me to learn more?

(Other definitions for confidence trick that I've seen before include "sting" , "fraud" , "scam" , "Deception" .)

I've seen this clue in The Daily Express.

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