The Shirley Collins Case is definitely a creepy one. I first heard about the crime on the recently deceased Collin Wilson's 10 Strangest Unsolved Murders In History entry in the Book of Lists #2 in 1981. He referred to it as "an Australian equivalent of the Black Dahlia murder".
I read about it in a magazine in the early '70's. I was about the same age. She was 14 going on her first date and gets off at the wrong train station. Something simple like station east instead of station west. Gets into someone's car, taken several miles away and led up a driveway where she was killed.
I always thought how easy it was for me to get off of a bus at the wrong stop and getting into a car of someone I knew who just happened to be driving by.
I think it had to be someone she knew, who just happened to be at that train station and took the opportunity because anyone who knew where she was going either thought she would be at another train station (the correct one) or that she was meeting someone at the station.
There was no struggle at the station - no one noticed anyone, although people did notice her. No one in the neighborhood heard a murder being committed outside in a driveway, so she must not have been struggling or screaming. It appears she became aware something was wrong and was running back down the driveway when the killer hit her in the head with a bottle, probably knocking her out.
I actually almost got into a strangers car when I was 16. My bus didn't come and I was walking to my job about 2 miles away when someone came along and asked if I wanted a ride. (This was a time when hitchhiking was common, although I didn't hitchhike). I hesitated and Shirley Collins came into my head (It had been that powerful to me), and I refused. He may have just been a guy who picked up hitchhikers all the time, or a crazed killer, I'll never know, but as I got older I started to get a little more creeped out when I thought about him, as he was actually driving along slowly next to me and kept asking if I wanted a ride, was I sure, was I going far, etc.