Sarcany, an adventurer, finds a tried carrier pigeon, gets possession of a code message and joining hands with an unscrupulous banker, Torenthal, secures a position as secretary with Mathias Sandorf. Decoding the message he unearths a plot against the government. Under the law, Torenthal and Sarcany secure half of Sandorf's wealth. Sandorf and his two friends are imprisoned and about to be executed when Sandorf makes his escape by sliding down a cable near the cell window. He hides in a peasant's home. His presence is made known to the police, but by hiding among the rocks all night he finally escapes. Twenty years later he returns, having wandered over the Orient as a healer and been left a fortune, including the Isle of Zorda, by a wealthy man. Sandorf's aim is to seek vengeance on the three who have betrayed him. His daughter, who was kidnapped, has been raised by Torenthal as his own child, and to keep her share of the fortune he seeks to marry her to Sarcany, but she is in love with the son of one of Sandorf's friends, and refuses. Sarcany is kidnapped and taken to Morocco. Sandorf gets the fisherman who betrayed him into his power, and also the banker who has lost his fortune at Monte Carlo. With Sava's sweetheart, who he has restored to health, they rescue Sava and get Sarcany in their power. Sandorf turns them over to the legal authorities, unites his daughter and her sweetheart, and all live happily on the Island of Zorda.—Exhibitors Herald, April 8, 1922