13: To ancient Romans, a symbol of death, destruction and misfortune

13: Number of words Lizzie Borden uttered at her murder trial

13: Number of witches in a coven

13: The death card in a Tarot deck, depicting the Grim Reaper

13: Number of steps leading to the gallows

13: Number of knots in a hangman’s noose

13: Number of feet that a guillotine blade falls

13: Pillar number hit by the driver of Princess Diana when she was killed in Paris, France

13: Number of people, including Jesus Christ and his 12 disciples, at the Last Supper

13: Number of letters in the names of mass murderers Jack the Ripper, John Wayne Gacy, Charles Manson, Jeffrey Dahmer and Theodore Bundy

Source: www.cosmicsociety.com