German train crashes, leading to prosecution (11)
I believe the answer is:
arraignment
'prosecution' is the definition.
(thesaurus)
'german train crashes' is the wordplay.
'crashes' is an anagram indicator.
'german'+'train'='germantrain'
'germantrain' with letters rearranged gives 'ARRAIGNMENT'.
'leading to' is the link.
(Other definitions for arraignment that I've seen before include "process of putting on trial" , "appearance in court" , "This legal process" .)