In August 1911, a man stole the Mona Lisa. His name was Vincenzo Peruggia. He worked at the Louvre museum before the theft. He knew the building very well.
On Sunday night, Vincenzo hid in a small closet. The museum closed for the day. He waited inside all night. He was quiet and patient.
On Monday morning, Vincenzo took the painting. He removed the heavy wooden frame. He walked out of the door quickly. Nobody stopped him on the street.
The police looked for the painting for two years. Vincenzo kept it under his bed. Finally, he tried to sell the masterpiece. The police arrested him in Italy.