Dr. Henry Jekyll experiments with scientific means of revealing the hidden, dark side of man and releases a murderer from within himself.

Hank and Lank: Lifesavers is a Silent Comedy short.

Jeff Bandera, outlaw, has been capture by the sheriff, who is taking him by rail to the nearest lockup. Jeff is desperate and when the train slows down to a curve he makes a leap through the window and, despite his handcuffs, escapes serious injury. Before the sheriff can leave the train and pursue him Jeff has taken refuge in the gulches of the rough country

Nellie Blair, the niece of a wealthy ranchman, and an orphan, comes in make her home with her uncle, and shortly after her arrival finds that the whole "Circle A" outfit, every manjack on the place, is in love with her.

Andy Carson, puncher on the Lazy X ranch, is in love with Gladys, daughter of Col. Pierce, the ranch owner. Gladys likes the young puncher, but when Jack Brinsley, a young Eastern friend of her father, comes to spend Christmas at the ranch, she speedily transfers her affection to the Easterner.

Dan Coughlin, a ranger, comes upon a band of smugglers and succeeds in capturing one of them, a half-breed Mexican, "Easy" Joe by name. Joe is taken to headquarters and locked up, while all efforts to wring a confession from him as to the whereabouts of the band's rendezvous have failed. It is not long, however, before the others of the gang make an effort to liberate their pal and send an Indian to spy upon Dan and other members of the troupe.

Young Frank McLain loses his position in the east, and resolves to go west to prospect for gold. Arrangements are made that he leave his wife at home, and send for her later, as soon as he has found a position. Frank's prospecting proves a failure, and he is without funds, when his plight is made more severe by receiving a letter from Alice, his wife.

When pretty Molly Martin comes out to the west to teach school, she is beset by many admirers. But the most persistent, and as fate often wills it, the least acceptable, is one "Bad" McGrew, town bully and a generally worthless scamp.

Old Jim Brown, a western ranchman, has a pretty daughter Gladys, who is loved by young Frank Carpenter, then foreman of the ranch. Brown objects to the match because he has an opportunity to marry Gladys off to a rich mine owner, seeing in this alliance the opportunity for social advancement for the girl and himself.

Driven to drink by poverty brought upon by the long illness of his wife, Joe Selling, a western miner, spends most of his time at the village bar, where one day his daughter Alice enters and pleads with him to come home. She is thrust aside by the brutal bartender, who orders her to leave the place when Dan Quigley, a rather shady character, takes her part, thrusts the bartender aside, and helping Joe to his feet, leads him out of the place and home. At home Alice pleads with both men to reform, but her father is obstinate and Dan says he is "too bad."