"The woman walked behind the man along the platform, mumbling to herself,....." Here is another article on a man mumbling to himself then stabbing a woman.
Woman stabbed on Greyhound
It used to be when people were mumbling to themselves you KNEW they were crazy. Not anymore. When I am about to get away from a mumbling person I then see that little microphone in their ear
Yeah, man you see guys
walking down the street
pushing shopping carts
and you think they're talking to allah,
they're talking to themself.
Man, no they're talking to ELVIS!
ELVIS! ELVIS!
Mojo Nixon - Elvis is everywhere
http://www.youtube.com/watch?v=e_hkIN38qnY