Suspicion to follow (5)
I believe the answer is:
trace
I believe this is a double definition.
'suspicion' is the first definition.
(I've seen this before)
'follow' is the second definition.
('trace' can be a synonym of 'follow')
'to' is the link.
(Other definitions for trace that I've seen before include "Discover; remains" , "Find - remnant of something" , "Skimpy garment" , "a piece of harness" , "Seek out" .)