Claire Holt's line "I started in the highest grossing horror movie of 2017" is a clear nod to her role in 47 Meters Down (2017)
All the actors and actresses have filmed all their scenes in their own homes due to the covid 19 pandemic where everyone was in quarantine.
Katherine McNamara and Luke Baines played brother and sister in the Freeform series Shadowhunters (2016).
The part where Katherine McNamara who plays Chrissy swings her sword and says she been practicing is a homage to when she was on Shadowhunters and she uses a sword.