Hillbillys in a Haunted House is a 1967 American horror comedy film starring Ferlin Husky

Ferlin Husky

Ferlin Eugene Husky was an early American country music singer who was equally adept at the genres of traditional honky honk, ballads, spoken recitations, and rockabilly pop tunes...

 and Joi Lansing

Joi Lansing

Joi Lansing was an American model, film and television actress, as well as a nightclub singer. She was most noted for her pin-up photos, and for her minor roles in B-movies...

, and directed by Jean Yarbrough

Jean Yarbrough

Jean Yarbrough was an American film director.-Biography:He was born in Marianna, the seat of Lee County in southeastern Arkansas. After attending the University of the South in Sewanee, Tennessee, he entered the film business in 1922, first as a propman, but he steadily rose in the ranks to...

. The film is a sequel

Sequel

A sequel is a narrative, documental, or other work of literature, film, theatre, or music that continues the story of or expands upon issues presented in some previous work...

 to The Las Vegas Hillbillys

The Las Vegas Hillbillys

The Las Vegas Hillbillys is a 1966 American country music comedy film directed by Arthur C. Pierce.-Cast:*Ferlin Husky ... Woody*Jayne Mansfield ... Tawny*Mamie Van Doren ... Boots Malone*Don Bowman ... Jeepers*Billie Bird ... Ma...

(1966), with Joi Lansing replacing Mamie Van Doren

Mamie Van Doren

Mamie Van Doren is an American actress and singer; who rose to popularity as Universal Pictures's version of 20th Century Fox's Marilyn Monroe....

 in the role of "Boots Malone".

Plot

Country singers are headed to Nashville. Their car breaks down and they stop overnight at an abandoned house, which turns out to be haunted. A ring of international spies (Lon Chaney, Jr.

Lon Chaney, Jr.

Lon Chaney, Jr. , born Creighton Tull Chaney, was an American character actor. He was best known for his roles in monster movies and as the son of famous silent film actor, Lon Chaney...

, Basil Rathbone

Basil Rathbone

Sir Basil Rathbone, KBE, MC, Kt was an English actor. He rose to prominence in England as a Shakespearean stage actor and went on to appear in over 70 films, primarily costume dramas, swashbucklers, and, occasionally, horror films...

 and John Carradine

John Carradine

John Carradine was an American actor, best known for his roles in horror films and Westerns as well as Shakespearean theater. A member of Cecil B DeMille's stock company and later John Ford's company, he was one of the most prolific character actors in Hollywood history...

) who live in the house are seeking a top secret formula for rocket fuel. While it is never revealed for whom they are spying, they carry out their activities under the cover of a supposed haunted house, which comes complete with a gorilla in the basement.