What evidence is so compelling that you believe it is being with held by the prosecution (and ultimately Letby )?
Her trial was more than 10 months long. There were thousands of pieces of evidence, including thousands of pages of medical records, internal hospital documents, and text messages between Letby and coworkers, friends and family. There were 2 years of her handwritten medical logs, some of which were found to be falsified. These were detailed medical records, fluid balance charts, and blood gas readings. There were inconsistencies found which were incriminating. As an example, her falsifying her notes about Baby E and the time of his initial bleeding injuries. His mom had evidence to corroborate her version of events and Lucy only had her own notes, which had no corroboration. The mom's testimony was more believable and she had receipts and phone logs, and if she is to be believed, Letby would be guilty of assaulting Baby E. The mom and Dad's testimony made Lucy look very guilty, imo.
The jurors heard testimony from numerous medical experts, colleagues, and the families of the babies. And most notably, the defendant's own testimony, about these 27 collapses. She was cross examined which brought up many questions about her actions.
There was evidence linking Letby to the times of the deaths and collapses, showing she had the means and opportunity to commit these crimes. And there were even potential motives discussed.l
Also, there were 257 confidential medical documents she had illegally brought home, some found under her bed. Initially she denied bringing them home, then she said she may have accidentally brought a few home, then eventually she claimed to have a problem with hoarding paperwork. The problem was that these papers were not ever supposed to leave the hospital. They had classified information about each patient and family and their medical status. Did she use these stolen documents to choose her victims? She had moved houses and still kept these stolen medical papers and moved them with her.
Handwritten notes were found at her home, including phrases like "I AM EVIL I DID THIS" and the defense argued they were outpourings of distress. Others found them suspicious and incriminating.
There was 10 months of evidence set forth concerning TWENTY SEVEN collapses. It is hard to just point air one piece of evidence. I think everything taken in context, staff member's testimony, parents of babies testimony, Lucy's own testimony, all taken together, showed she was guilty beyond reasonable doubt. IMO