The Midnight Man (1917)

When young inventor Bob Moore fails in his efforts to provide his father a safe manufacturer with a lock that is burglar proof he contacts The Eel the most talented safecracker in the city to offer him a job in his factory The Eel deciding to go straight accepts the offer but when he later learns that Irene Hardin has been given a valuable necklace by her father The Eel plans one last job to secure Irenes pearls