Per 
Item #: SCP-4657/ Betrayer's blade
Object Class: Euclid
Special Containment Procedures: Always lock in a bullet proof case and let nobody important in the case.
Description: SCP-4657 is a medieval dagger, with blood stains, and writing scratched into the blade. Found in the burnt forest, the dagger was forged by a blacksmith, who then murdered his friends with it. The daggers know cursed by the souls of the victims of the dagger.
Addendum: If someone holds the dagger, nothing really happens. But a couple days later, they start hearing whispers.(The souls talking) Then their mind starts to hurt, and the person starts to get suicidal thoughts.(The souls effecting their mind.) If the suicide effects them, then they will kill themselves. But if not, then they will murder all of their friends. If they don't have friends, then they would ether kill themselves, or go on a murder spree.
