In the movie industry, the only thing better than one great film is a series of them. While we all love The Lord of the Rings and The Dark Knight, there's a whole world of lesser-known trilogies that deliver just as much brilliance. These hidden gems often fly under the radar, but they're essential viewing for any cinephile. Here are seven underrated trilogies that prove three is a magic number.
1. The Vengeance Trilogy (2002–2005)
Park Chan-wook's Vengeance Trilogy—Sympathy for Mr. Vengeance (2002), Oldboy (2003), and Lady Vengeance (2005)—is a masterclass in thematic storytelling. Though the films aren't narratively connected, they share deep explorations of ethics, violence, redemption, and, of course, vengeance. Oldboy is the standout, winning the Grand Prix at Cannes and inspiring multiple remakes. The trilogy's final chapter, Lady Vengeance, earned the Blue Dragon Film Award for Best Film. If you're a fan of intense, morally complex cinema, this is a must-watch.
2. The Three Colours Trilogy (1993–1994)
Krzysztof Kieślowski's Three Colours trilogy—Blue, White, and Red—is a poetic exploration of the French Revolutionary ideals of liberty, equality, and fraternity. Each film is named after a color of the French flag and uses its story to examine that ideal. Though the narratives are independent, characters subtly cross paths, creating a shared world. Red earned Academy Award nominations for Best Director, Best Original Screenplay, and Best Cinematography. This trilogy is a profound meditation on human connection and political ideals.
3. The Apartment Trilogy (1965–1976)
Roman Polanski's Apartment Trilogy—Repulsion (1965), Rosemary's Baby (1968), and The Tenant (1976)—uses the protagonist's apartment as a mirror for their psychological state. Repulsion stars Catherine Deneuve as a woman repulsed by sexuality, while Rosemary's Baby features Mia Farrow in a supernatural conspiracy. The Tenant stars Polanski himself as a man unraveling in his new home. Initially met with mixed reviews, these films have since been reappraised as seminal horror works. Rosemary's Baby is now considered one of the best horror movies ever, influencing countless occult films.
4. The Millennium Trilogy (2009)
Based on Stieg Larsson's novels, the Millennium Trilogy—The Girl with the Dragon Tattoo, The Girl Who Played with Fire, and The Girl Who Kicked the Hornet's Nest—follows hacker Lisbeth Salander (Noomi Rapace) and journalist Mikael Blomkvist (Michael Nyqvist). The first film is the most famous, but the entire trilogy is a gripping ride through mystery and conspiracy. For fans of action-thriller masterpieces, this Swedish series is a hidden treasure.
5. The Three Flavours Cornetto Trilogy (2004–2013)
Edgar Wright's Cornetto Trilogy—Shaun of the Dead (2004), Hot Fuzz (2007), and The World's End (2013)—is a comedic tour de force. Each film parodies a different genre (zombie, buddy cop, sci-fi) while maintaining a consistent tone and cast. The trilogy's clever writing and visual gags have earned it a cult following. For a ranking of these films, check out our breakdown.
6. The Before Trilogy (1995–2013)
Richard Linklater's Before trilogy—Before Sunrise (1995), Before Sunset (2004), and Before Midnight (2013)—follows Jesse and Céline over 18 years. Each film captures a single conversation, exploring love, time, and connection. The trilogy is a rare example of real-time storytelling that deepens with each installment. It's a must-see for fans of intimate, dialogue-driven cinema.
7. The Death Trilogy (1995–2000)
Alejandro González Iñárritu's Death Trilogy—Amores Perros (2000), 21 Grams (2003), and Babel (2006)—is a triptych of interconnected stories about loss and redemption. Though not a traditional trilogy, the films share themes of death and chance. Amores Perros launched Iñárritu's career, while Babel earned multiple Oscar nominations. This trilogy is a powerful exploration of human fragility.
These seven trilogies prove that greatness doesn't always come with mainstream fame. Whether you're into horror, drama, or comedy, there's a hidden gem here waiting to be discovered. For more underrated cinematic treasures, explore our list of trilogies that outshine LOTR.
