Fifth Installment of Horror Franchise Insidious Focuses on Original Lambert Family, Explores Complex Mythology in Deleted Scenes

The fifth Insidious film, The Red Door, brings back the original cast to conclude the Lambert family's story.
The Insidious series began in 2010 and follows a family haunted after their son falls into a coma, as well as a psychic who battles evil spirits.
Deleted scenes from the prequels Insidious: Chapter 3 and Insidious: The Last Key provide deeper insight into characters and the franchise's scary dimension called the Further.
Insidious: Chapter 3 follows a teen girl who accidentally summons a malevolent spirit.
Insidious: The Last Key explores the backstory of psychic Elise Rainier, including scenes with her abusive father.