Vigilance

You took a job from the Adventurers Guild to find the prized stallion of a local lord that was stolen. You tracked the thieves to warehouse by the docks and you're staking it out. You're thinking about how to make your move when you feel the tap of the flat of a dagger on your arm. You slowly turn and see a red skinned tielfing dressed all in black melt out of the shadows. He shakes his head at you as if to say 'This job's mine.'