Trivia: When the film was put into production, Macaulay Culkin was nearly five foot six. A cast of tall adults were hired to create the illusion that Culkin was shorter than he actually was at the time. Most of the cast is taller than six foot.
Trivia: The young version of Richie Rich is played by Rory Culkin, Macaulay Culkin's real-life younger brother.
Answer: Since the person had obviously been let in just to kill Cadbury, the guards would have been paid off to look the other way.
Greg Dwyer