Ondanks de waarschuwingen denken verschillende mensen de ideale vakantiebestemming gevonden te hebben. Groot is dan ook de schrik als blijkt dat er wel degelijk iets goed mis is. Een vreemd wezen stuurt zijn vliegende helpers er op uit om mensen aan te vallen en hun bloed uit te zuigen.
Nee, helaas is Without Warning nog niet beschikbaar op Netflix in Nederland.
| Directing | Greydon Clark | Director |
| Writing | Lyn Freeman | Writer |
| Writing | Steven R. Mathis | Writer |
| Writing | Daniel Grodnik | Writer |
| Production | Paul Kimatian | Executive Producer |
| Production | Skip Steloff | Executive Producer |
| Crew | Greg Cannom | Makeup Effects |
| Camera | Dean Cundey | Director of Photography |
| Production | Greydon Clark | Producer |
| Art | Jack De Wolf | Production Design |
| Crew | Joe Quinlivan | Special Effects |
| Sound | Dan Wyman | Original Music Composer |
| Costume & Make-Up | Alistair Mitchell | Makeup Artist |
| Editing | Curtis Burch | Editor |
| Writing | Bennett Tramer | Writer |
| Costume & Make-Up | Elois Jenssen | Costume Design |
| Lighting | Scott Buttfield | Gaffer |
| Directing | Jeffrey Sudzin | Second Assistant Director |
| Lighting | Brenda Haverstock | Electrician |
| Camera | Thomas Vanghele | Second Assistant Camera |
| Camera | Clyde E. Bryan | First Assistant Camera |
| Directing | Brenda Weisman | Script Supervisor |
| Lighting | Howard Herrington | Assistant Gaffer |
| Camera | Dylan Shephard | Key Grip |
| Lighting | Matia Karrell | Electrician |
| Camera | Hedy Dietz | Still Photographer |
| Sound | Jean Clark | Boom Operator |
| Editing | Julia Evershade | Assistant Editor |
| Production | L. Steven Snyder | Production Accountant |
| Art | Woody Perkins | Props |
| Camera | Mike Connors | Grip |
| Directing | Caren Singer | First Assistant Director |
| Costume & Make-Up | Jack Buehler | Wardrobe Supervisor |
| Sound | Earl Watson | Sound Editor |
| Production | Lyn Freeman | Co-Producer |
| Production | Daniel Grodunk | Co-Producer |
| Production | Milton Spencer | Associate Producer |
| Production | Jefferson Richard | Production Manager |
| Art | Haywood Perkins | Property Master |
| Sound | Robert Dietz | Sound |
| Production | Curtis Burch | Associate Producer |
