John Allen was the victim in the 1959 murder case 'The Cyanide Plot'.

John Allen was the victim in the 1959 murder case 'The Cyanide Plot'.

A gold digger takes out his wealthy lover with a lethal nightcap, and a cunning wife gets caught out on her husband's second trip to ER. Make sure you subscribe to get your regular crime fix: youtube.com/c/RealCrime From "Poisonous Liaisons" Content licensed from Drive TV to Little Dot Studios. Any queries, please contact us at: owned-enquiries@littledotstudios.com