Collected basil around island produced by those who may be suspect (6)
I believe the answer is:
alibis
'by those who may be suspect' is the definition.
I can't judge whether this definition defines the answer.
'collected basil around island' is the wordplay.
I cannot really understand how this works, but
'island' could be 'is' and 'is' is located in the answer.
This explanation may well be incorrect...
'produced' acts as a link.
Can you help me to learn more?
(Other definitions for alibis that I've seen before include "Defences in court" , "Pleas of being elsewhere at the time of a crime" , "Legal defences of being somewhere else at times of crimes" , "Defences of being elsewhere at the time of a crime" , "Proofs of absence from the scene of the crime" .)