The Secret of Kells
Detailed parental analysis
This family animated film blends medieval adventure, Celtic mystery and striking stylized artwork, with a poetic atmosphere that regularly turns dark and unsettling. The main sensitive elements involve fear, including a threatening forest, wolves, a serpent like evil spirit, and a Viking invasion setting with destruction and characters facing real danger. The violence is not graphic and remains highly stylized, yet several scenes can unsettle young children because of their visual intensity, loud sound design, and the story's references to loss, death, and a stern adult exerting pressure on a child. This is not adult material, but it does require some emotional maturity because the darker moments are frequent enough to matter. I would recommend it from about age 8 with parental support, and closer to age 10 for most children to enjoy the artistry and story without becoming overly frightened.
Synopsis
Adventure awaits 12 year old Brendan who must fight Vikings and a serpent god to find a crystal and complete the legendary Book of Kells. In order to finish Brother Aiden's book, Brendan must overcome his deepest fears on a secret quest that will take him beyond the abbey walls and into the enchanted forest where dangerous mythical creatures hide. Will Brendan succeed in his quest?
Where to watch
Availability checked on Apr 29, 2026
About this title
- Format
- Feature film
- Year
- 2009
- Runtime
- 1h 15m
- Countries
- Ireland, France, Belgium
- Original language
- EN
- Directed by
- Tomm Moore
- Main cast
- Evan McGuire, Christen Mooney, Brendan Gleeson, Mick Lally, Liam Hourican, Paul Tylak, Michael McGrath, Paul Young, Nora Twomey, Alli McCann
- Studios
- Cartoon Saloon, Gébéka Films, Les Armateurs, Vivi Film, France 2 Cinéma, Celluloid Dreams, RTÉ, Fís Éireann/Screen Ireland
Content barometer
- Violence3/5Notable
- Fear3/5Notable tension
- Sexuality0/5None
- Language0/5None
- Narrative complexity1/5Accessible
- Adult themes0/5None
Watch-outs
- Death / grief
- Violence
Values conveyed
- friendship
- courage
- creativity
- mentorship
- resilience