1Daniel had worked as a night guard at the city museum for almost twenty years.
2Every night he walked past the same painting of a young girl holding a lantern.
3He always said good evening to her, although his colleagues laughed at him.
4One stormy night the electricity failed, and the whole building went completely dark.
5Daniel was sure he saw a small light moving in the east gallery.
6He followed it with his torch, but the corridor was empty and silent.
7When the lights returned, the painting was hanging crooked on the wall.
8Behind it, he discovered a door that nobody had opened for decades.
9Inside the hidden room there were letters written by the museum's first director.
10The letters revealed that the girl in the painting was his daughter, who died young.
11Daniel put the letters in a glass case beside the painting the next morning.
12Visitors now stop to read her story, and Daniel still says good evening.