Caught Daniel going astray (6)
I believe the answer is:
nailed
'caught' is the definition.
(I've seen this before)
'daniel going astray' is the wordplay.
'going astray' indicates anagramming the letters.
'daniel' anagrammed gives 'NAILED'.
(Other definitions for nailed that I've seen before include "Fixed with metal spikes" , "Pinned down, literally with small metal spikes" , "Fixed with a pin" , "Hammered in" , "Fastened with metal pin" .)