SF Studios announces the Final Installment in the Nelly Rapp Trilogy, Premiering in 2026

SF Studios has now announced that the third and final film of the popular Nelly Rapp trilogy, based on Martin Widmark’s beloved books, will premiere in 2026. Nelly Rapp – The Gate to the Underworld picks up where the previous film left off, once again following Matilda Gross as the popular monster agent. Johan Rosell returns as director, with a screenplay by Sofie and Tove Forsman. Jonathan Ridings and Niklas Larsson are producing for SF Studios, which is also distributing the film. Filming is set to begin in October 2025, and audiences can look forward to its theatrical release in 2026. REinvent handles international sales.
When Nelly Rapp reunites with her mother, Alice, she learns that a terrible danger is lurking. An ancient vampire has broken free and plans to open the gateway to the underworld—where a long-dormant evil is waiting to be unleashed. With Valle, London, and Alice by her side, Nelly must stop the vampire before disaster strikes. But are they ready to face the shadows of the past and the power that threatens to destroy everything? Nelly Rapp – The Gate to the Underworld is a spectacular and thrilling adventure where the line between good and evil becomes blurred.
Matilda Gross returns in the lead role, having made her film debut in the first Nelly Rapp movie. She is joined by both new and familiar faces in her battle against evil. The film is directed by Johan Rosell (Nelly Rapp – The Secret of the Black Forest), with a screenplay by sisters Sofie and Tove Forsman (Young Royals), based on the popular Nelly Rapp books by Martin Widmark, illustrated by Christina Alvner and Emil Maxén.
"It feels fantastic to return to Nelly Rapp's magical world! I look forward to portraying the meeting between Nelly and her mother – while also offering the audience an action-packed adventure filled with humor, monsters, and excitement!" says Johan Rosell, director.
The previous two films—Nelly Rapp – Monster Agent and Nelly Rapp – The Secret of the Black Forest—were both box office successes, with a combined audience of 260,000 in Swedish cinemas.
"This will be the ultimate adventure film of the year for the whole family. It’s an absolute thrill to work with Johan, Sofie, and Tove – together, we’re bringing laughter, tears, and unforgettable villains that will light up the big screen!" says Jonathan Ridings, producer at SF Studios.
Nelly Rapp – The Gate to the Underworld is SF Studios’ third Nelly Rapp-film. The producers are Jonathan Ridings and Niklas Larsson, with Larsson previously producing the successful Nelly Rapp-films, while Ridings has also produced the popular JerryMaya’s Detective Agency-films and Burn All My Letters. Executive producer for SF Studios is Jon Nohrstedt.
"Working with Martin Widmark's beloved characters is both an honor and a joy. His stories have captivated readers for years, and now we look forward to sharing this exciting conclusion to the trilogy with the cinema audience!” says Niklas Larsson.
The film is co-produced by Film i Väst and Sveriges Television with support from the Swedish Film Institute and The Swedish Agency for Economic and Regional Growth. SF Studios distributes the film in the Nordic countries and REinvent handles international sales.
For more information, please contact
Jesper Larsson, Communications Specialist, SF Studios, jesper.larsson@sfstudios.se
Helene Aurø, Sales & Marketing Director, REinvent International Sales, helene.auro@reinvent.dk
About SF Studios
SF Studios, established in 1919, is one of the world’s oldest film companies. Today SF Studios is the leading film studio in the Nordic region with its headquarters in Stockholm, Sweden and offices in Oslo, Copenhagen and Helsinki. The company is producing and distributing feature films and TV series as well as providing the streaming services SF Anytime and Blockbuster. SF Studios is part of the leading Nordic media company Bonnier.
About REinvent International Sales
REinvent Studios is a packaging, sales and financing studio all in one. REinvent Studios has extensive knowledge of original trends and sales opportunities in both the Scandinavian and international markets and works with high profile European production companies.