Jeopardise by showing wrath after the finale (8)
I believe the answer is:
endanger
'jeopardise by' is the definition.
'endanger' can be an answer for 'jeopardise' (synonyms). I am not certain of the 'by' bit.
'wrath after the finale' is the wordplay.
'wrath' becomes 'anger' (synonyms).
'after' says to put letters next to each other.
'the finale' becomes 'end' (the end of a story or show).
'anger' put after 'end' is 'ENDANGER'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for endanger that I've seen before include "Put in harm's way" , "Put in jeopardy" , "Put in trouble" , "compromise" , "Threaten" .)