5 down
…
which
leads
to
her
arrest
and
transportation
(4)
… which leads to her arrest and transportation (4)
hints
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checks
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hints
The definition is at the beginning of the clue.
How the clue works
The definition is which, a relative pronoun matching THAT. The word "leads" signals taking the first letters of "to her arrest [and] transportation" → T-H-A-T.