Ms. Letby, a neonatal nurse in England, was convicted of murdering seven babies last year. But a growing number of experts have raised concerns about the evidence.

Convicted killer Lucy Letby's bid to appeal against her latest conviction for the attempted murder of a baby girl has been dismissed by the Court of Appeal. Letby’s lawyers asked senior judges for approval to appeal against her most recent conviction, which followed a retrial in July for a charge of attempting to kill a newborn known as Child K.

Lucy Letby was found guilty of the attempted murder of Baby K following a re-trial earlier this year, which saw her sentenced to a 15th whole life term for the attack on the premature infant