Jack Drake, gentleman burglar, is fastidious. He visits his tobacconist and orders a fresh supply of cigarettes bearing his monogram, Rosa, .the tobacconist's daughter, is desperately in love with him. Drake calls at a jewelry store and looks over a number of articles. When Julian Driver, the clerk, opens the safe to produce a further display of goods, Drake whips out a pair of powerful opera glasses and secures the combination. He makes a small purchase and leaves. On the following morning the safe is found open and its valuable contents gone. Detective Dallas is summoned and discovers a cigarette bearing the initials "J.D." They are Julian Driver's, the clerk's initials. He is placed under arrest. Ethel, the jeweler's daughter, is in love with him and protests. Her plea is so convincing that Dallas promises to do his best to clear the man. He follows the cigarette clue. The tobacconist identifies the monogram and gives him Drake's address. Rosa, however, warns the culprit over the telephone. When the detective gains entrance to Drake's apartments by a clever disguise, the man is on his guard. The cigarettes he now smokes bear no monogram. Dallas discovers finger prints that correspond on both cigarettes. By a subterfuge he finds where the stolen jewelry is hidden. .An exciting chase follows, during which Drake makes a sensational hand over hand flight on a telegraph wire. It is in vain, however, and he is turned over to justice, while the innocent man is released.
—Moving Picture World synopsis