Witnessed Saunders' initial pub fight and later proposes a criminal partnership to him. He blackmails Saunders into a penicillin robbery. He confronts Jane, attempts to force himself on her, and is stabbed. Later, he is held at gunpoint by Saunders and killed in an apartment.
Carter uses Saunders' criminal past to coerce Wharton into the heist.
Carter and Widgery briefly share a train journey and card game.
Carter's testimony indirectly leads to the Judge's sentencing of Saunders.
Carter's observation of the Publican's death ties him to the initial crime.
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