Mood in which false evidence is thought up? (5,2,4)
I believe the answer is:
frame of mind
'mood' is the definition.
(I've seen this in another clue)
'false evidence is thought up?' is the wordplay.
I cannot quite see how this works, but
'thought' could be 'mind' (mind is a kind of thought) and 'mind' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'in which' is the link.
Can you help me to learn more?
(Another definition for frame of mind that I've seen is " Mental or emotional state".)