The Black Diamond Express

The smashed corner of a trunk containing counterfeiting paraphernalia reveals to Helen that there is treachery afoot at Lone Point. Detectives capture two of the trio, but one of them gets away, pursued by Helen, across a high railroad trestle. Seventh of the "Hazards of Helen" Railroad Series.

Chilton, a crooked dealer in antiques, decides on a daring scheme to recoup his finances by defrauding the railroad. A car-load of cheap furniture is shipped with a valuation of $40,000 on it. Blanding, the tool of Chilton and his partner, awaits at Lone Point a telegram giving the number of the car.

Under the influence of liquor, Griffin foolishly displays a roll of bills. Wheeler and Walter, yeggmen, see the money and trail the traveler to the station. The men learn the berth he is to occupy. Hastening to a bridge under which the train must pass, they drop to the roof of one of the cars when it appears. Helen, transferred to Burnett, is a passenger on the train. By mistake, Griffin gets into her berth. Because of the man's condition, Helen consents to allow him to keep her berth. The girl takes the one which Griffin's ticket calls for. An hour later, Helen is awakened by a peculiar noise outside the car. Hastily dressing, she sees the window being raised. Wheeler's face appears at the window. The man foils Helen's attempt to shoot him, disarms her and then climbs back to the roof of the car.

Sharky, a rival road agent, plots to spoil a trial run to be made on Helen's road that will win a mail contract. He opens a waste valve on the tank of the engine, and, when nearing Lone Point, the water tank runs dry. Helen comes to the rescue by mounting the new gasoline speeder and starting off with the mail for the end of the run.

Deering and his gang rifle the station safe and gain possession of some valuable gems; Helen seizes the package and throws it into the river. In order to recover the package, a human chain is formed by the railroad men, which Helen climbs down and attempts to catch the package with her feet. Meanwhile, Deering and his men have boarded a launch, and succeed in grabbing both Helen and the package. Morton takes over a freight train, captures the crooks, and rescues Helen and the gems.

Brent, the night operator has been knocked unconscious by a piece of lumber projecting from a passing freight, and has been rendered temporarily insane. Meantime, a furious storm arises, a track walker discovers a washout and wires a warning to Helen, who sets the danger signal for the Limited which is due in ten minutes.

An action movie serial that premiered in 1924

Upon learning that a gang of smugglers are using freight cars to bring Chinamen across the border, the railroad officials order all employees to keep a strict watch for traffic of this nature.

Film 111 of the Hazards of Helen film series

Film 104 in the Hazards of Helen series

107th film in the Hazards of Helen series

Film #109 in the Hazards of Helen series

When the Limited is forced to stop because of an obstruction on the tracks, the passengers alight for a stroll. In the excitement of boarding again one of the passengers loses a handbag containing her jewels and money. Two crooks aboard the train hear of this and at Helen's station they alight.

Apparent carelessness causes Conductor Lawton and his train crew to be laid off for thirty days. A gang of car thieves, pursued by police, jump aboard a freight, and after a stiff combat, succeed in throwing the crew off the speeding train to the ground.

A college boy's prank imperils the life of the railroad president's son who has worked his way up to engineer in his course that starts "from the bottom." Tied to the engine, the son is speeding on a runaway engine toward the Flicker Creek bridge which has been swept away by the floods.

Helen, the telegraph operator at the Lone Point Station, shields Miguel, a greaser, under suspicion of having stolen some horses, until the real thieves are caught.

Their demand for money having gone unheeded, Garibaldi and his gang wreck Number One. Howard, who attempts to interfere, is battered into insensibility. The criminals then place a note in the man's pocket warning the railroad officials to heed their demands in the future.

Beaten by Dun and Corson, Trent is hurled unconscious to the tracks. Helen, who witnesses the attack, drags Trent from the rails just in time to save him from death beneath the wheels of an oncoming train. When the tramp revives, he accompanies his rescuer back to the station.

Burkett, superintendent of the Western Railway, opposes his daughter's friendship for Dick Benton, one of the company's lawyers, favoring the latter's fellow-worker, Guy Warren. Warren succeeds in putting through a scheme which results in Dick's discharge. The lovers plan to elope and enlist the aid of Helen. But Eleanor's father learns of the move and wires ahead to police officials to board her train and arrest her while he follows in his special. By a daring leap from a handcar to the train Helen succeeds in warning Eleanor of her peril, but is too late, and Helen and Dick are forced to stand idly by while Burkett starts on the return trip in his special, carefully guarding Eleanor.

Greggs, returning from abroad with a large consignment of precious stones, thwarts the first attempt of Gentleman Joe and his accomplice to rob him at his hotel, but they follow him aboard the train the when he is alone on the observation platform they attack him, and a struggle ensues in which Greggs is finally thrown to the ground from the speeding train. Helen, riding through the hills in an auto, comes upon him before Joe and his pal can alight from the train, Greggs gives her the diamonds and tells her to speed away and rush help back to take care of his injuries.