Crosses town to get suit, changing direction once (7)
I believe the answer is:
thwarts
'crosses' is the definition.
(thwart can mean to cross or go across)
'town to get suit changing direction once' is the wordplay.
I cannot quite understand how this works, but
'town' could be 't' (abbreviation for town) and 't' is found in the answer.
'direction' could be 'w' (W is an example) and 'w' is found within the answer.
The remaining letters 'harts' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
(Other definitions for thwarts that I've seen before include "Frustrates" , "Blocks, prevents" .)