Frankelda's Book of Spooks

Frankelda's Book of Spooks (Spanish: Los Sustos Ocultos de Frankelda) is a Mexican stop motion animated television series created by brothers Arturo and Roy Ambriz Rendón and produced by the animation studio Cinema Fantasma for Cartoon Network Latin America and HBO Max.

Frankelda's Book of Spooks
Spanish	Los Sustos Ocultos de Frankelda
English	Frankelda's Book of Spooks
Genre	Anthology Horror Fantasy
Created by	Arturo Ambriz Roy Ambriz
Written by	Arturo Ambriz Roy Ambriz
Directed by	Arturo Ambriz Roy Ambriz
Voices of	Mireya Mendoza Aturo Mercado Jr. Lourdes Ambriz Anahí Allué Sergio Carranza Luis Leonadro Suárez Magda Giner Assira Abbate Jessica Fam Gina H Amelio Sebastián Albavera
Opening theme	"Tinta Invisible"
Composer	Kevin Smithers
Country of origin	Mexico United States
Original languages	Spanish English
No. of seasons	1
No. of episodes	5
Production
Executive producers	Rodolfo Ambriz Avelar Adriana Rendón
Producers	Arturo Ambriz Rendón Roy Ambriz Rendón
Running time	12-16 minutes
Production companies	Cinema Fantasma Darkframe Digital Cartoon Network Latin America Original Productions
Original release
Network	HBO Max
Release	October 29, 2021 (2021-10-29) (Latin America) October 12, 2023 (2023-10-12) (United States and Canada)

Premise

Frankelda, a mysterious ghostwriter, tells tales of terror with the assistance of her grumpy enchanted book Herneval, primarily focused on children encountering supernatural entities such as gnomes, witches, sirens and the Coco collectively known as "Spooks", that rely on human fear to survive. Trapped in the consciousness of a sentient haunted house for 150 years, telling stories allows the two an opportunity to gradually regain their strength and make an escape plan, though with the obstacle of the house itself waking up.

Characters

• Frankelda (voiced by Mireya Mendoza), is the show's narrator, loosely inspired by Frankenstein author Mary Shelley. She is the energetic ghost of Francisca Imelda, an aspiring horror writer from 1870s Mexico. Growing up with a fondness for reading and writing scary stories, her passions were discouraged by her family and her manuscripts were rejected by sexist publishers, resulting in her taking on her pen name. She takes an offer from Herneval to become his new Royal Nightmare Writer, allowing her stories to find an audience in people's dreams, though her consciousness has to be separated from her body to make the trip to the realm of the Spooks. However, with the journey turning into a one-way trip and the nature of dreams leaving her anonymous, she has become a literal ghostwriter.
• Herneval (voiced by Arturo Mercado Jr.) is Frankelda's cautious and grumpy enchanted book. Prior to taking on his current state, he was an owl-like creature that was the Prince of the Spooks Kingdom. Admiring her work since the two were children, he makes a romantic offer for her to become the Spooks' new nightmare writer. Herneval can make people sleep by touching them and can induce astral projection in humans.
• Procustes (voiced by Luis Leonardo Suarez) is a giant spider monster that was the previous Royal Nightmare Writer of the Spooks. When his stories had become tired, cliche and less effective for creating the nightmares the kingdom needed, Herneval sought to replace him with Frankelda. In revenge he made sure Frankelda's consciousness would not leave the Spook realm, and through unknown circumstances, he has transformed into a living haunted house that has trapped Frankelda and Herneval within the walls of his mind.

Production

Frankelda's Book of Spooks was initially pitched as a small web series with a four-minute pilot episode being released in 2019 on the Cartoon Network YouTube channel, inspired by Tales from the Crypt and The Storyteller. When the series was backed by HBO Max as part of their larger initiative to develop 100 projects in Latin America, the Ambriz brothers expanded the scope of the project into something more dramatic with musical numbers. 122 puppets and 42 sets were created for the series.^[1]

The series was dubbed into English twice over, first by the Miami-based studio BKS as a language option for its initial HBO Max Latin America release and a second time by Keywords Studios in Los Angeles for its US release. This second dub had the three leads of the Mexican cast reprise their roles in English.

The series is being positioned as a "calling card" for Cinema Fantasma, with the Ambriz brothers describing Frankelda's extended backstory as offering enough depth as a hook for potential later seasons or a movie.^[2] A spinoff exploring the backstory of Frankelda and Herneval further was announced at the Pixelatl 2022 festival, titled Frankelda and the Prince of Spooks,^[3] later being confirmed as a movie when it was announced it would be featured as a work in progress at the 2023 Annecy International Animation Festival as part of a showcase of Mexican animation.^[4] The film, retitled I Am Frankelda, was completed in 2025^[5] and premiered at Annecy,^[6] with a Mexican theatrical release being planned for the fall.

Episodes

Season	Episodes		Originally released
Pilot			November 11, 2019 (2019-11-11)
1	5		October 29, 2021 (2021-10-29)

Pilot	Air Date	Platform	Duration
Sustos ocultos de Frankelda	November 11, 2019	Cartoon Network - YouTube	4:17 min

No.	Title	Directed by	Written by	Original release date	English release date
1	"What's Your Name"	Arturo Ambriz and Roy Ambriz	Arturo Ambriz Rendón and Roy Ambriz	October 29, 2021 (2021-10-29)	October 12, 2023
Frankelda tells the story of Nemo, a boy who is willing to offer a gnome the most valuable thing he has in exchange for free time.
2	"You Can Transform Yourself"	Arturo Ambriz and Roy Ambriz	Arturo Ambriz and Roy Ambriz	October 29, 2021 (2021-10-29)	October 12, 2023
Frankelda tells the story of Magali, a girl who accepts a deal with three mysterious women, seeking to change to fit in.
3	"They'll Drown in Their Fears"	Arturo Ambriz and Roy Ambriz	Arturo Ambriz Rendón and Roy Ambriz	October 29, 2021 (2021-10-29)	October 12, 2023
Frankelda tells the story of Uli, a boy who will have to overcome his own insecurities to rescue his friends from the clutches of a mythological aquatic being.
4	"Let's Get Out of the Dark"	Arturo Ambriz and Roy Ambriz	Arturo Ambriz and Roy Ambriz	October 29, 2021 (2021-10-29)	October 12, 2023
Frankelda tells the story of Tere, a girl who makes a deal with the charismatic El Coco to stop suffering from her passion for theremin music.
5	"Invisible Ink"	Arturo Ambriz and Roy Ambriz	Arturo Ambriz and Roy Ambriz	October 29, 2021 (2021-10-29)	October 12, 2023
Frankelda tells the story of her mortal self, Francisca Imelda, who decides to challenge the world with the help of a mysterious being to dedicate herself to writing horror fiction.