
An in-depth look at some of the world's most dangerous murderers.

Richard Kuklinski claims to have murdered over 100 people for New York and New Jersey's crime families.

A master manipulator is accused of the murder of his wife, and is eventually caught out by a polygraph test - and his own fiancée.

Police in Aurora, Colorado find the body of a young man in his own home with a bullet wound to the head.

When Mary Gough is found dead in her family home, her husband Colin Whelan appears shocked.