This object is the strongest and most dangerous promise in the criminal underworld.
There are only two unbreakable rules in this world: you cannot kill on Continental grounds, and you must honor every Marker. John Wick 2: Pacto de sangre
In (also known as John Wick: Chapter 2 ), the "useful feature" that drives the entire plot is the Marker —a physical medallion representing an unbreakable blood oath. The Blood Oath Marker This object is the strongest and most dangerous