A rural Colombian village is attacked by a horrible sea serpent, aroused by industrial pollution of a nearby lake. Based on a real event that took place in June of 1971.

Directors:

 Kenneth Hartford (as Kenneth Herts) , Herbert L. Strock (uncredited)

Writers:

 Kenneth Hartford, Walter Roeber Schmidt, 2 more credits »

Stars:

 James Mitchum, John Carradine, Philip Carey - via IMDB 

https://archive.org/details/MonsterA.k.a.Monstroid

An evil gunslinging midget comes to terrorize the good little people of Tiny Town. The townspeople organize to defeat him, and zany antics ensue

Director:

 Sam Newfield

Writers:

 Fred Myton (original screenplay), Clarence Marks(added dialogue)

Stars:

 Billy Curtis, Yvonne Moray, 'Little Billy' Rhodes - via IMDB 

https://archive.org/details/TheTerrorOfTinyTown1938_802

A post-apocalyptic tale based on a novella by Harlan Ellison. A boy communicates telepathically with his dog as they scavenge for food and sex, and they stumble into an underground society ... See full summary »

Director:

 L.Q. Jones

Writers:

 L.Q. Jones (screenplay), Harlan Ellison (novel), 1 more credit »

Stars:

 Don Johnson, Jason Robards, Susanne Benton - via IMDB 

https://archive.org/details/ABoyAndHisDog1975

A cabal of American industrialists, all fifth-columnists intent on sabotaging the war effort, are methodically murdered by the malevolent Monsieur Colomb. It is only until detective Dick ... See full summary »

Director:

 William Nigh

Writers:

 Harvey Gates (original story), Harvey Gates(screenplay), 1 more credit »

Stars:

 Bela Lugosi, Joan Barclay, George Pembroke - via IMDB 

https://archive.org/details/back_dragons_ipod

A Colorado ski resort is besieged by a sub-human beast that commits brutal murders on the slopes.

Director:

 Herb Wallerstein

Writer:

 Joseph Stefano

Stars:

 Bo Svenson, Yvette Mimieux, Robert Logan - via IMDB 

https://archive.org/details/Snowbeast_436

Pursued by the big-time gambler he robbed, John Muller takes a new identity, with ironic results.

Director:

 Steve Sekely

Writers:

 Daniel Fuchs (screenplay), Murray Forbes (novel)

Stars:

 Paul Henreid, Joan Bennett, Eduard Franz - via IMDB 

https://archive.org/details/The_Scar-1948

Spies discover that the Red Chinese have built a "doomsday machine" capable of destroying the surface of the Earth, and that they plan to use it within a matter of days. Meanwhile, Project ... See full summary »

Directors:

 Harry Hope, Lee Sholem, 1 more credit »

Writer:

 Stuart J. Byrne (original story and screenplay)

Stars:

 Bobby Van, Ruta Lee, Mala Powers - via IMDB 

https://archive.org/details/DoomsdayMachine1972

Casus Kiran is a Turkish movie from 1968. It was directed by Yilmaz Atadeniz and stars Irfan Atasoy and Sevda Fenda. I'm not exactly sure what the plot is about, but it's chock full of action.

Director:

 Yilmaz Atadeniz

Writer:

 Yilmaz Atadeniz

Stars:

 Sevda Ferdag, Irfan Atasoy, Yildirim Gencer - via IMDB 

https://archive.org/details/CasusKiran

This period action classic features Cornel Wilde, who also co-produced and directed this film, as Lancelot, the bravest knight of the Round Table.

Director:

 Cornel Wilde

Writers:

 Richard Schayer, Cornel Wilde

Stars:

 Cornel Wilde, Jean Wallace, Brian Aherne - via IMDB 

https://archive.org/details/CornellWildeSwordofLancelotkiperip

A ruthless, domineering woman is married to an alcoholic D.A., her childhood companion who is the only living witness to her murder of her rich aunt seventeen years earlier.

Director:

 Lewis Milestone

Writers:

 Robert Rossen (screenplay), John Patrick (story),1 more credit »

Stars:

 Barbara Stanwyck, Van Heflin, Lizabeth Scott - via IMDB 

https://archive.org/details/Martha_Ivers