Crook runs away -- suspect Den has to agree a deal (5,5)

I believe the answer is:

shake hands

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'agree a deal' is the definition.
I can't judge whether this defines the answer.

'crook runs away suspect den has' is the wordplay.
'crook runs away' becomes 'shak' (I can't explain this - if you can you should believe this answer much more).
'suspect' indicates anagramming the letters (a suspicious or unusual spelling).
'den'+'has'='denhas'
'denhas' with letters rearranged gives 'ehands'.
'shak'+'ehands'='SHAKE HANDS'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for shake hands that I've seen before include "Finalise agreement" , "Greet" .)

I've seen this clue in The Telegraph.

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