Act of escaping with girl and boy going round island (7)
I believe the answer is:
evasion
'act' is the definition.
(evasion is a kind of act)
'escaping with girl and boy going round island' is the wordplay.
I cannot really see how this works, but
'girl' could be 'eva' (girl's name) and 'eva' is found in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
'boy' could be 'si' and 'si' is found in the answer.
'round' could be 'o' (round can mean a round object) and 'o' is located in the answer.
No letters remain.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for evasion that I've seen before include "Deceptive action" , "Act of avoidance or escape" , "Subterfuge" , "The act of dodging the issue." , "Hedging" .)