I'm in! because I love trains since I was a kid, plus I grew up watching (besides chinese kung fu films) detective stories like "Der Alte" and "Scooby Doo" :P and I never missed an episode from "Sherlock Holmes in the 22nd Century" and lastly I enjoy point & click adventures a loooot.
I won't tell a story from a game, since it would ruin it for those who didn't play yet, but I have to say I was hooked by "Broken Sword: Shadows of the Templars".
Anyway, when I was little we used to travel a lot on train, I really liked the train station smell and was fascinated by trains since the first time I traveled on one. I remember I would get all excited waiting for the train to start to moving, so when it started to gain speed it would start making the marvellous clickity clackity sound while rolling through the rails.
There was one train though, in wich we were a "little" worried because every time it took a curve, it started to jump like a crazy horse, so we looked out from the window and there was a nice bottomless pit to make us even a "little" more worried. Seriously one time, the train officer went to the last wagon and told the people to go to the other one, because that one had a probability of derrailing OwO! So after that time we would always wait for another one if that was the only one at the station when we arrived. Nonetheless we enjoyed the ride, minus the curves.
Some years ago we went to the countryside where the railroad goes through, a very quiet place, and it was a surprise to us when we went through some trees and bushes (because on the way into the river nearby we saw something stationed behind) and met the same train we use to ride back in the time (not the jumpy one, the safe one :P) still sporting the black and yellow stripped paint, we were thrilled and at the same time sad.....it was abandoned in a rail end, by the side of a ridden down small station, the grass growing tall beside it. I got inside and went right into the driver's cabin, the controls were all rusty, as the rest of the interior, the windows were mostly broken, and the seats were damaged. Still, like if it was kind of "Herbie" from "Love Bug" you could feel like going back in your head when you got inside it and feel a little attached to it, like if the two headlights were winking at you :D. I managed to get a picture taken in the train's cabin, we kept admiring it a little longer and then left with a lot of pics. I have hope the trains will ride once again like it was back then or even much much, better.
By the way, I don't know why, but trains make for extraordinary places for mystery movies, maybe, because of the constrainment of where you can go or maybe because I love trains :D.
So yes, trains and big mansions in the middle of nowhere, at a stormy night while it's raining and a number of people are invited to stay until the the storm goes away :D