The question immediately posed in tonight's Channel 4 documentary was this - is Lucy Letby evil?
The programme examined whether the nurse's convictions are a result of justice or the total opposite.
Letby , who has always maintained her innocence, is serving a whole life order for the murders of seven infants and the attempted murders of seven others between June 2015 and June 2016.
Dr Dewi Evans, the prosecution's expert witness, has no doubt in his mind that the former neonatal nurse is guilty. "Is she evil? Yes, she’s evil," he says. "And I have no idea why anyone thinks she’s anything but guilty. She’s not innocent… I’m astonished with what her current barrister is doing. It’s absolutely disgraceful."
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While her barrister Mark McDonald is of the complete