Two widowers. Jansen and Dobley, are high-class crooks. Their children, Frank Dobley and Esther Jansen, are engaged, but do not know about their fathers' trade. Frank, unknown to his father, gets the assignment from his editor to run down the band of crooks. He joins forces with Andrews, a young detective. Frank is caught by the band without his father's knowledge and escapes a time bomb by flooding the room he is in. He is rescued from drowning by Esther. Andrews. Esther and Frank trail the bandits and with the help of the police some of them are caught. Among them is Dobley, whom Frank tries to help escape when he discovers his identity. Dobley is thrown over the roof by Andrews, held solely by handcuffs and in that way captured. Frank gives up his work and Dobley goes to prison without implicating Jansen. Jansen, to safeguard himself, tells Esther she can never marry the son of a thief, and Frank writes of it to his father in jail. The father decides to escape and confront his old ...
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