Very sad and upsetting morning at work forty years (!) ago. When I was shunting, I was walking through the yard I worked in towards the shunters cabin at about 07:00 ready for the days fun. There was a car parked outside and I was chuntering to myself about "what do management want now?" As I got nearer, I realised there was no one about, it was summer, so already daylight. I unlocked the cabin and put the kettle on then went back out to the car. Across the back seat was a dozen or so credit cards and an envelope. I went on to the signalman, who hadn't seen anything out of course and I asked him to call the police and told him what my suspicions were. I went on a little walk up the line, there was a road bridge over the railway at one end of the yard and as I walked through it I found him. I could go into a description, but if you know, you know. I called the signalman on a nearby SPT to tell him and he blocked the railway. Good job he did too as seconds later the (civil) police turned up mob handed with not a hi viz between them! I had better mornings.