(first of all, I'm not good at english. sorry)

I'm searching a stop-motion animation's title name.
The contents on this animation is 'train murder'.

might be... There were 4 people in the train.
Main character was a distrustful man.
The murderer was a fat woman. She knit a sweater that marked of X (or V).

Please tell me this animation's name...
I'm searching on the Internet for several months!!!