This is a forensic mathematical evaluation of Lucy Letby, accused, and as of the 18th August, 2023, the now convicted serial killer, of 7 newborn infants and the attempted murder of 10 others. She has been marked never to be released. Infanticide is a heinously cruel crime, rightly looked upon with horror and repulsion by normal people, since it is the deliberate murder of defenseless, helpless, little babies. An analysis of the chart of Lucy Letby shows she is entirely capable of such evil deeds. I doubt whether she will last long in prison. Even if she is given protection in solitary confinement initially, that can’t last forever, and it won’t be long before justice catches up with her, meted out in violent and harsh prison style.