Terrible ordeal in Texas city (6)
I believe the answer is:
laredo
'texas city' is the definition.
(I've seen this in another clue)
'terrible ordeal' is the wordplay.
'terrible' indicates an anagram.
'ordeal' with letters rearranged gives 'LAREDO'.
'in' acts as a link.
(Other definitions for laredo that I've seen before include "Texan city" , "US city" , "US-Mexico border town" .)