Crossword Genius

The last thing a tragedy might do (3,2,8)

Ross

I believe the answer is:

end in disaster

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'might do' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'the last thing a tragedy' is the wordplay.
'the last thing' becomes 'endin' (I can't justify this - if you can you should believe this answer much more).
'a tragedy' becomes 'disaster' (synonyms).
'endin'+'disaster'='END IN DISASTER'

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I've seen this clue in The Irish News.
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