In the second of two cases looking at illegality as a defence we turn to the proceedings brought by Ecila Henderson who murdered her mother during a psychotic episode. It turned out that the NHS Trust was negligent in its care and she should never have been in a position to commit this awful act in the first place. She claimed damages from the NHS Trust for their negligence and the Supreme Court was asked to consider if her criminal action should serve as a bar to her claim.

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