This was posted on reddit about a month ago
About ten years I was walking back from a night out with another two friends. We were walking along the canals into the Castlefield area. It was about 3am. We needed to cross one of the bridges over the water. But at the base of the bridge was a man. Tall, broad, dressed completely in black. Importantly he was wearing a black mask covering half of his face. He was completely alone. He stared at us as we approached. He didn't take his eyes off us. We obviously knew something wasn't right. As we walked across the bridge he began following us...stomping his feet as hard as he could onto the bridge as he did so. We were terrified. He was obviously trying to be threatening. We got to the other side of the bridge and continued on our journey. The man now stood on our side of the bridge, at the base of the bridge...staring at us until we were out of sight. It was incredibly scary. Who knows what he would have done had somebody been alone. Why was he there alone at 3am? Why was he dressed completely in black? Why was he wearing a mask covering half of his face? Why was he silently so confrontational and invasive? What was he stood waiting for? I called and warned the police but they didn't seem overly interested.
Tbf most on the thread there don't believe it os a serial killer, but this stood out as odd