Guess there's a report at night (1,4,2,3,4)
I believe the answer is:
a shot in the dark
'guess' is the definition.
(I've seen this before)
'a report at night' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'at' could be 'in' (synonymous in some cases - eg at school, in school) and 'in' is found within the answer.
'night' could be 'dark' (synonyms) and 'dark' is found in the answer.
This explanation may well be incorrect...
'there's' is the link.
Can you help me to learn more?
(Other definitions for a shot in the dark that I've seen before include "this may mean someone's been killed at midnight?" , "this could suggest a midnight murder" , "Wild stab" , "what a night sight's for?" , "made by night-time assassin" .)