Inside Lucy Letby’s diaries cops used to snare baby killer – & why expert thinks secret code PROVES her innocence

MANY serial killers from history have left a written record of their crimes – whether it’s the diary entries of Dennis Rader and Melvin Rees, or the cryptic notes of The Zodiac Killer.

Experts tend to agree that it comes from a combination of a pathological need for control, a twisted desire to relive their worst acts, and the thrill of the cat-and-mouse chase.

Lucy Letby was given a whole life order in prison for murders of seven babies and the attempted murders of seven more...