Attractive victims come round time after time (6)
I believe the answer is:
pretty
'attractive' is the definition.
(pretty can mean good-looking or attractive)
'victims come round time after time' is the wordplay.
'victims' becomes 'prey' (I can't justify this - if you can you should give a lot more credence to this answer).
'come round' indicates putting letters inside.
'time' becomes 't' (abbreviation).
'after' means one lot of letters go next to another.
'time' becomes 't' (abbreviation).
't'+'t'='tt'
'prey' going around 'tt' is 'PRETTY'.
Can you help me to learn more?
(Other definitions for pretty that I've seen before include "like a kettle of fish" , "Pleasing to look at" , "Nice to look at" , "Pleasing on the eye" , "Attractive in delicate way" .)