[La Chat Noire]

First off, let me say that "The Strangers" is one of the scariest movies I've seen in a long time, because instead of focusing on gore they used more interesting suspense elements. In terms of how realistic it is, my guess would be that two bodies were found in a summer house execution style. But the whole mental torture and masks element is most likely all Hollywood because unless the killers were caught there would be no way to know about the events that transpired that night since the victims are dead.