Metro Killing?

Throughout the film they refer to Marta killing someone in the Metro - even she says she did it in the Metro.

The film clearly shows her leaving the Metro - going into a building - taking an elevator - and then slashing the guy's throat in the hallway.

Even the plot on IMDB says: "Cut to the subway, where two tough guys are pursuing Marta, a blond waif. She manages to surprise one of them in a hallway, dispatching him with a straight razor,"

For me this sets a new record for lack of continuity and consistency in a najor happening in a plot.