Hidden Wax What's The Name And Author Of The Short Story Where A Man Spends The Night At A Wax Museum Of Serial Killers?

What's the name and author of the short story where a man spends the night at a wax museum of serial killers? - hidden wax

He tries to money by making you an article about his night at the museum and its sale in a newspaper. At the end he dies after imagine the fear that one of the wax masks the only real mass murderers.