The Streets of New York (1922)

Badger, a clerk at a Wall Street brokerage, discovers that his boss Gideon Bloodgood has swindled an investor, Fairweather, out of his money. Fairweather dies of a heart attack after an argument with Bloodgood, and Badger uses this knowledge to blackmail him. By a strange coincidence, Bloodgood's daughter Lucy runs over Fairweather's son, Paul, and cripples him.