Heart of the Rockies (1937)

Ladrones de ganado muy organizados trabajan con mataderos portátiles y furgones refrigerados. El gobernador pide a los Tres Mesquiteros que investiguen.

El gobierno del estado planea construir una presa que acabará con las propiedades de granjeros y rancheros. Su intención es compensar con equidad a los propietarios pero un taimado promotor de bienes raíces complicará las cosas. Los rancheros se unirán para combatir tanto a la ley como a los malhechores.

Los Tres Mesquiteros capturan a un ladrón de caballos, que es puesto en libertad por un juez corrupto. Reúnen firmas para obligar al gobernador a investigar, pero uno de los portadores resulta muerto y Stoney es acusado del crimen.

Con él mismo y su padre sin trabajo por culpa de Balsinger, quien controla los empleos, Will Parker roba ganado para mantener a su familia. Los Tres Mezquiteros intentan ayudarle, pero es apresado y encarcelado...

Talbot uses a phony land grant to rule thirteen million acres, taxing everyone heavily and evicting those who won't pay. The Three Mesquiteers becomes mysterious "night riders" to fight this evil.

When Professor Marsh disappears while searching for the lost city of Lukachukai, his daughter enlists the help of the Three Mesquiteers.

Stony, Tucson y Lullaby, "Los Tres Mosqueteros", deciden dejar sus negocios de la ganadería e invertir en el negocio de las aerolíneas. Compran un avión para enviar oro, pero el dueño de la aerolínea contrata a unos delincuentes para secuestrar el avión y quedarse con toda la riqueza. Los tres amigos tendrán que buscar el avión para recuperar todo su oro.

Cattle are being routinely stolen from a local ranch, and suspicion centers on a local mountain family. But the Three Mesquiteers are wise to the criminals' deeds. But when a ranger is shot and Stony is framed for the crime, it's up to Lullaby and Tucson to prove his innocence.

In Kansas Terrors, Stoney and his saddle pal Rusty take a job delivering horses to a flyspeck Caribbean island. Here they join forces with Rico to topple the regime of a despotic commandante.

The Mesquiteers return to Texas after the Civil War to find Army carpetbaggers fighting the local bushwackers. They quickly learn that Capt. Hawks and his men are the culprits and join up with Morgan and his men.

Aramis fell off her horse and received the aid of a man named Francois. They fell in love with each other at first sight and spent their time happily for a while. Francois was killed by Manson and the Ironmask's people, so Aramis swore revenge. Then she went to Paris to be a musketeer. 1 year after the end of TV series, D'Artagnan had a drink with 3 musketeers and found that Jussac and the Cardinal's Guards harrassed a woman in a tavern in Paris. Of couse, they fought Jussac and the Cardinal's guards and won. On his way to home, D'Artagnan witnessed the woman whom he rescued from Jussac about to jump into the river, and rescued her again. D'Artagnan brought her to home but she disappeared soon. After a day, D'Artagnan heard that the woman was killed last night and Rochefort and Cardinal's guards arrested him for murder because his hat was found by the woman's body. Aramis discovers that the story has a link with Catherine de Médicis, and launches out an investigation.

La bonita propietaria de un circo posee un rancho, pero nunca ha ido a verlo, aunque tampoco se lo quiere vender a Mike Abbott. Sus socios, conchabados en secreto con Abbott, sabotean el espectáculo para obligarla a vender, pero en cambio ella se instala a vivir en el rancho.

A crooked real estate manipulator sells worthless land on mortgage to flood refugees, then tries to profit by reselling the land to the state, committing murder in the process, as the Three Mesquiteers work to bring him and his gang to justice.

Commissioner Tredwell is the law of the land and he gets whatever he wants with the help of hired guns and lackey lawyer Conners. The only one who publicly stands up to Tredwell is Beecham of the Clarion. Beecham has his paper burned to the ground and when he starts a petition to make Wyoming a state, taking the power away from Tredwell, he is killed. But when Kansas Kate comes in to visit her son Conners, she sees what is going on and she takes over the paper and keeps the pressure on Tredwill. With this Conners has mixed emotions, but the boys do everything they can to protect Kate and the paper. Written by Tony Fontana

The Cherokee Strip is off limits to the Rangers, so that is where badman Lemar operates from. When the Rangers capture his brother and the jury sentences him to hang, Lemar starts killing the jurists. Then the scoundrels kidnap the Captain's daughter Doris... Written by Tony Fontana

A banker struggles to keep his bank solvent and his town from going bankrupt after the bank is robbed and all its money taken. The Three Mesquiteers ride into town and set out to help.

Stony's brother George has been accused of murder and the Mesquiteers have returned to prove his innocence. But they find that Harvey rules the town along with his stooge Sheriff Gray and that George won't get a fair trial.

The Mesquiteers try to help their friend build a telegraph system, despite a local newspaper editor's attempts to sabotage the lines.

Stony Brooke, Rusty Joslin and Rico, known as The Three Mesquiteers, return to Oklahoma at the close of the Spanish-American War, and are concerned that some of their wounded buddies have no prospects for a satisfactory future. When the government offers preferred homesteads in the newly-opened Oklahoma territory to war veterans, they send word for their pals to join them there. Once there, the veterans meet a hostile reception as the cattlemen resent the influx of "nesters" and are determined to drive them out. Mace Liscomb and his brother Orv plan not only to drive out the homesteaders, but to also double cross the cattlemen and gain exclusive titles to the range lands for themselves. Stony and his pals eventually show the honest cattlemen that there is room for the settlers and that both are fighting a common enemy. Written by Les Adams

Yet another fast-paced western featuring the "Three Mesqueteers," pulp writer William Colt McDonald's trio of sagebrush heroes, Lone Star Raiders finds Stony Brooke (Robert Livingston), Tucson Smith (Bob Steele) and Lullaby Joslin (Rufe Davis) defending elderly rancher "Granny" Phelps (Sarah Padden) from greedy neighbor Henry Martin (George Douglas).