take the card and head the direction of that address

since this seems to you like an emergency.
Tying the bloody cloth around your waist and stepping out over the loudly snoring drunk just outside in the alley, you reach the street without incident. The address on the card is somewhere near the docks in a neighborhood that was once moderately fine, but in recent years has seen its best days long in the past.
Turning down toward the river, you spot a policeman just coming your way.
Do you: