Who mr e and mr f are in martin dillins book shankill butchers?

In Martin Dillon's book "The Shankill Butchers," Mr. E and Mr. F are pseudonyms for two key figures associated with the infamous Shankill Butchers gang, a loyalist paramilitary group responsible for a series of brutal murders during the Troubles in Northern Ireland. Their identities are concealed to protect them, as the book delves into the violent and secretive nature of the gang's activities. Dillon explores the psychological and social factors that drove these men to commit heinous acts, providing insight into their motivations and the larger context of the conflict in Northern Ireland.