During the trial at Manchester Crown Court, prosecutors presented the yellow Post-it note as a "confession in a nutshell". The densely written paper contained several damning phrases: written in capital letters. "I don't deserve to live" . "I am a horrible evil person" .

While Letby's defense team argued these were the "anguished" ramblings of a woman whose mental health was spiraling after being removed from clinical duties, the prosecution framed them as the internal admission of a killer who "enjoyed playing God".

The handwritten confession of Lucy Letby , a British neonatal nurse found guilty of murdering seven babies, serves as a chilling centerpiece in one of the most harrowing criminal cases in modern history. Discovered during a 2018 police search of her home, the collection of Post-it notes and diary entries—most notably the one stating —transformed a complex medical investigation into a definitive portrait of "evil" in a place of healing. The Note as Central Evidence

Lucy Letby trial: Murder-accused nurse wrote 'I am evil', trial told - BBC