[XP] WANT ARROW TO POINT TO NPC YELLING SOMETHING OFFSCREEN AS HE RUNS AROUND SO YOU CAN GO FIND HIM

I have a scene in my game where the player is in a haunted woods, and an npc comes from offscreen yelling about something he saw, but there's nothing to guarantee that you're near him on that map to even see him when he starts shouting about it. I'm also running CCOA's UMS and have it configured so you can walk around while the dialogue is running through. I want to combine this with a feature that has an arrow (like a flashing arrow graphic that changes direction) to point to where on the screen (off screen) the npc is currently screaming about his problem, so you can find him when you see the dialogue but can't yet see the character. I think this would be useful for a lot of other instances as well if someone could whip up a script or however it could be done, but I'm not at a point where I would know how to do this.

Any help would be appreciated.