Raneem Oudeh from the UK learned her husband was already married. Facing threats, she called 999 for help, leading to a tragic end and a manhunt.
In 1998, Scottish entrepreneur Nat Fraser's odd behaviour raises suspicion when his wife Arlene vanishes. Police suspect him but need evidence
When Bennylyn Burke and her young daughter, Jellica, vanish after visiting a man she met online, police uncover a disturbing crime with international roots.
Shane Gilmer and Laura Sugden were planning a quiet night out when a horrific ambush shattered their lives.
In June 2010, taxi driver Derrick Bird went on one of the worst killing sprees in British history. He shot dead twelve people and injured many more.
Nurse Marie Whiston claimed her husband died naturally while in her care. An autopsy revealed lethal insulin - she used her medical expertise to murder him.