Last of Erebus
From Tardis Wiki, the free Doctor Who reference
The Last of Erebus (known to Torchwood as Object One or the Bad Penny and to Jack Harkness as the Red Key) was a locket given by the Committee to the Tsar of Russia in order to weaken the country with its power of bad luck, causing a rise in infant mortality amongst other things. The Tsar gave the object to Queen Victoria. Upon learning of the object's power, she gave it to Jack Harkness to throw into the Cardiff Space-Time Rift. Holding onto it for a while, he eventually did so. (AUDIO: The Torchwood Archive)
The little girl came into possession of it, and gave it to Alex Hopkins. (AUDIO: The Torchwood Archive) He opened it and saw the future, causing him to kill his team-mates to spare them before killing himself. (TV: Fragments)
