Ergens in de 10de eeuw, zien twee broertjes, Erik en Eron, hoe hun ouders worden vermoord door de Engelsen. Erik wordt meegenomen en opgevoed door Koningin Anne, terwijl Eron opgroeit in eenzaamheid. Jaren later, wanneer de Vikingen een aanval beramen op Engeland komen ze elkaar weer tegen, Eron als Viking en Erik als officier.
Nee, helaas is Gli invasori nog niet beschikbaar op Netflix in Nederland.
| Directing | Mario Bava | Director |
| Costume & Make-Up | Mario Giorsi | Costume Design |
| Sound | Luigi Urbini | Conductor |
| Art | Giorgio Giovannini | Production Design |
| Directing | Tonino Ricci | Second Assistant Director |
| Directing | Franco Prosperi | First Assistant Director |
| Production | Paolo Mercuri | Unit Manager |
| Editing | Lina Caterini | Assistant Editor |
| Production | Arturo Padovani | Production Secretary |
| Writing | Oreste Biancoli | Story |
| Sound | Tonino Cacciottolo | Foley Artist |
| Writing | Piero Pierotti | Story |
| Production | Dante Brini | Administration |
| Art | Massimo Tavazzi | Set Decoration |
| Sound | Roberto Mattioli | Sound |
| Sound | Pietro Vesperini | Sound Recordist |
| Camera | Giuseppe Berta | Assistant Camera |
| Costume & Make-Up | Tina Grani | Costume Design |
| Writing | Mario Bava | Story |
| Production | Armando Govoni | Unit Manager |
| Camera | Enrico Fontana | Assistant Camera |
| Production | Lionello Santi | Producer |
| Directing | Anita Borgiotti | Script Supervisor |
| Sound | Roberto Nicolosi | Original Music Composer |
| Editing | Mario Serandrei | Editor |
| Camera | Mario Bava | Director of Photography |
| Writing | Oreste Biancoli | Screenplay |
| Costume & Make-Up | Euclide Santoli | Makeup Artist |
| Camera | Giovanni Narzisi | Camera Operator |
| Writing | Mario Bava | Screenplay |
| Costume & Make-Up | Mara Rocchetti | Hairstylist |
| Sound | Aldo Zanni | Boom Operator |
| Writing | Piero Pierotti | Screenplay |
| Production | Massimo De Rita | Production Manager |
| Crew | Leopoldo Savona | Choreographer |
| Camera | Ubaldo Terzano | Camera Operator |
