Hailey woont het schoolconcert van haar nichtje bij en ontdekt dat de geliefde muziekleraar verdwenen is. Hailey ontdekt al snel een aantal verrassende geheimen onder het personeel, evenals een verband tussen de vermiste jonge leraar en de wederopbouwfondsen van de school.
Nee, helaas is Hailey Dean Mysteries: 2 + 2 = Murder nog niet beschikbaar op Netflix in Nederland.
| Camera | Dana Barnaby | Director of Photography |
| Directing | Michael Robison | Director |
| Editing | Jason Pielak | Editor |
| Camera | Allister Foster | Still Photographer |
| Sound | Francesca Cammarata | Music Coordinator |
| Sound | Siân O'Byrne | Music Supervisor |
| Production | Nancy Grace | Executive Producer |
| Sound | Eric Weisner | Boom Operator |
| Production | Patrick Mokrane | Production Accountant |
| Costume & Make-Up | Geeta Dayal | Makeup Department Head |
| Directing | Jason Furukawa | First Assistant Director |
| Sound | Joe Watts | Sound Re-Recording Mixer |
| Sound | Valerie Biggin | Music Supervisor |
| Sound | Tony Gort | Sound Designer |
| Editing | Achim Kapitza | Colorist |
| Editing | Troy Weinreich | First Assistant Editor |
| Sound | Aaron Olson | Dialogue Editor |
| Crew | Jacob Bond | Generator Operator |
| Writing | Jonathan Greene | Story |
| Production | Kellie Martin | Executive Producer |
| Directing | Michael Bishop | Third Assistant Director |
| Lighting | Blaine Ackerly | Gaffer |
| Writing | Nancy Grace | Characters |
| Sound | Hamish Thomson | Original Music Composer |
| Costume & Make-Up | Marco Pimenta | Assistant Costume Designer |
| Crew | Martin Testa | Special Effects Coordinator |
| Production | Saskia Werner | Post Production Coordinator |
| Production | Christian Bruyère | Producer |
| Art | Donna McBride | Set Decoration |
| Writing | Michelle Ricci | Writer |
| Art | Fraser Hagen | Art Direction |
| Crew | Carl Fortin | Stunt Double |
| Art | Nick Richardson | Production Design |
| Sound | German Camardella | ADR Editor |
| Camera | Laurent Danis | First Assistant "A" Camera |
