Letby was arrested

Sure, here is a 100-word description of the Lucy Letby case and the calls for NHS managers to be held to account:

Lucy Letby, a former neonatal nurse at the Countess of Chester Hospital in the UK, was convicted of murdering eight babies and the attempted murder of six others. The crimes took place between 2015 and 2016.

Dr. Stephen Brearey, the lead consultant on the neonatal unit where Letby worked, raised concerns about her in October 2015. However, his concerns were not taken seriously and Letby was allowed to continue working.

After Letby was arrested, Dr. Brearey called for NHS managers to be held to account for their failures. He said that there was "no apparent accountability" for what NHS managers do and that they often move to other trusts without facing any consequences for their actions.