Travelled overseas with leads from spaghetti westerns and mysteries (4)
I believe the answer is:
swam
'travelled' is the definition.
(swimming is a kind of travelling)
'overseas with leads from spaghetti westerns and mysteries' is the wordplay.
I cannot quite understand how this works, but
'with' could be 'w' (abbreviation) and 'w' is found within the answer.
The remaining letters 'sam' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for swam that I've seen before include "Did butterfly perhaps" , "Splashed around" , "Travelled through water" , "was dizzy" , "Moved through water" .)