They're crazy to get mixed up in a scam (7)

I believe the answer is:

maniacs

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'they're crazy to' is the definition.
The definition suggests an adverb but the answer is not.

'mixed up in a scam' is the wordplay.
'mixed up' indicates an anagram.
'in'+'a'+'scam'='inascam'
'inascam' is an anagram of 'MANIACS'.

'get' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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