Een jonge verpleegster, Quinn genaamd, downloadt een app op haar telefoon die voorspelt wanneer iemand zal sterven. Deze app vertelt haar dat ze nog maar krap drie dagen te leven heeft. Vanaf dat moment begint een mysterieus figuur haar te achtervolgen.
Nee, helaas is Countdown nog niet beschikbaar op Netflix in Nederland.
| Camera | Jacqueline Stahl | First Assistant "B" Camera |
| Camera | Nathan Stern | Steadicam Operator |
| Camera | Stefano Ben | "B" Camera Operator |
| Sound | John Sheridan | Boom Operator |
| Camera | Blake Hooks | Second Assistant "A" Camera |
| Costume & Make-Up | Jacenda Burkett | Makeup Artist |
| Camera | Renni Pollock | Second Assistant "B" Camera |
| Costume & Make-Up | Stacy Schneiderman | Hair Department Head |
| Costume & Make-Up | Marisa Pinuelas | Hairstylist |
| Sound | Vincent Guisetti | Foley Artist |
| Editing | Mark Griffith | Digital Intermediate Colorist |
| Camera | Alex Grossfeld | First Assistant "B" Camera |
| Costume & Make-Up | Kaylie Klone | Hairstylist |
| Camera | Devon Hoff-Weekes | "B" Camera Operator |
| Crew | Jeremy Hays | Special Effects Coordinator |
| Costume & Make-Up | Anna Milhouse | Key Hair Stylist |
| Costume & Make-Up | Erica Preus | Key Makeup Artist |
| Costume & Make-Up | Tracey Henton | Makeup Artist |
| Costume & Make-Up | Tami Lane | Makeup Department Head |
| Costume & Make-Up | Melissa Oliveira | Hairstylist |
| Costume & Make-Up | Anthony Veader | Hairstylist |
| Camera | Nathan Stern | "A" Camera Operator |
| Costume & Make-Up | Jacqueline Weiss | Hairstylist |
| Sound | Branden Spencer | ADR Supervisor |
| Sound | Brendan Croxon | Foley Mixer |
| Sound | Michael Payne | Sound Effects Editor |
| Production | Ashley Lambert | ADR Voice Casting |
| Crew | Tammy Sandler | Unit Publicist |
| Sound | Hector C. Gika | Sound Designer |
| Sound | Geordy Sincavage | Foley Supervisor |
| Sound | Phil Lee | Sound Mix Technician |
| Sound | Alexander Jongbloed | Foley Editor |
| Sound | Mary Parker | Music Editor |
| Crew | Steve Polon | Transportation Co-Captain |
| Camera | Hopper Stone | Still Photographer |
| Sound | Meredith McBee | Music Coordinator |
| Sound | Tim Tuchrello | Assistant Sound Editor |
| Crew | Matt Moyes | CG Supervisor |
| Crew | Gary Preece | Transportation Coordinator |
| Sound | Jamie Famularo | Foley Editor |
| Sound | Monique Reymond | Foley Artist |
| Visual Effects | Bryan Binder | Visual Effects Producer |
| Lighting | Sean Smith | Gaffer |
| Lighting | Noah Cruz | Best Boy Electric |
| Costume & Make-Up | Deborah Goldstein | Costume Supervisor |
| Directing | Noreen Dimster-Denk | Second Second Assistant Director |
| Camera | Ralph Del Castillo | Dolly Grip |
| Camera | Jason L. Stevens | Dolly Grip |
| Costume & Make-Up | Devon Simon | Costume Assistant |
| Production | Jay Traynor | Location Manager |
| Costume & Make-Up | Tina Zepeda | Key Costumer |
| Production | Katherine McCown | Casting Assistant |
| Production | Bill Dance | Background Casting Director |
| Art | Rick Staves | Leadman |
| Art | Lima Hyelim Kang | Graphic Designer |
| Camera | David Conti | Key Grip |
| Production | Harrison Gunnarshaug | Production Secretary |
| Art | Megan Soderberg | Art Department Coordinator |
| Production | Jessie Francis | Assistant Accountant |
| Editing | Gene A. Lewis Jr. | First Assistant Editor |
| Production | May Nejati | Production Supervisor |
| Costume & Make-Up | Tiffany Lazette Powers | Set Costumer |
| Crew | Lauren Bertoni | Studio Teacher |
| Crew | Yaminah McKessey | Post Production Supervisor |
| Camera | Richard D. Conti | Grip |
| Lighting | Brian Schreiner | Rigging Grip |
| Production | Austin Miller | Production Secretary |
| Art | Marquis Martin | Assistant Property Master |
| Production | Ami Francis | Production Accountant |
| Crew | Alma Weaks | Craft Service |
| Camera | Jason D. Habeger | Grip |
| Sound | Jason Coleman | Foley Mixer |
| Directing | Justin Dec | Director |
| Production | John Rickard | Producer |
| Writing | Justin Dec | Writer |
| Production | Robert Simonds | Executive Producer |
| Camera | Maxime Alexandre | Director of Photography |
| Costume & Make-Up | Abby O'Sullivan | Costume Design |
| Production | John Morris | Producer |
| Production | Rich Delia | Casting Director |
| Art | Clayton Hartley | Production Design |
| Production | Zack Schiller | Producer |
| Art | Jon J. Bush | Set Decoration |
| Production | Sean Anders | Producer |
| Sound | Joel Dougherty | Sound Re-Recording Mixer |
| Sound | Thomas Curley | Sound Mixer |
| Sound | Sean McCormack | Supervising Sound Editor |
| Art | Erick Garibay | Property Master |
| Directing | Jane Goldsmith | Script Supervisor |
| Crew | Marc Scizak | Stunt Coordinator |
| Production | Adam Fogelson | Executive Producer |
| Production | Gregory Plotkin | Executive Producer |
| Production | Tyler Zacharia | Executive Producer |
| Production | Alexander Boies | Executive Producer |
| Sound | Jason Markey | Music Supervisor |
| Production | Devin Andre | Co-Producer |
| Production | Nicolas Harvard | Co-Producer |
| Editing | Brad Wilhite | Editor |
| Production | Matthew Medlin | Executive Producer |
| Production | Max Jacoby | Co-Producer |
| Sound | Danny Bensi | Music |
| Sound | Saunder Jurriaans | Music |
| Directing | Cyndi Martin | Second Assistant Director |
| Directing | Nicolas Harvard | First Assistant Director |
| Production | Matthew Medlin | Unit Production Manager |
| Crew | Norb Phillips | Stunts |
| Crew | Terrence Julien | Stunts |
| Crew | Keith Campbell | Stunts |
| Art | Harrison Hartley | Art Direction |
| Crew | Mike Li | Stunts |
| Crew | Shauna Duggins | Stunts |
| Crew | Athena Perample | Stunts |
| Crew | Allison Caetano | Stunts |
| Crew | Bobby Lee | Stunts |
| Visual Effects | Melissa Brockman | Visual Effects Producer |
| Crew | Charles Grisham | Stunts |
| Crew | Dirk Rogers | Stunts |
| Crew | Lauren Shaw | Stunts |
