Senior sleuth accosted magic, modern shooter (7)
I believe the answer is:
digicam
'shooter' is the definition.
(I know that digicam is a type of camera)
'senior sleuth accosted magic modern' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'magic' is 'gicam' which is within the answer.
The remaining letters 'di' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for digicam that I've seen is " Device for taking and storing moving images".)