The Insidious franchise is back, but does Insidious: The Red Door have a post-credits scene setting up more? The fifth entry in the Insidious franchise brings the Lambert family back to the focus, as Josh, Renai, and Dalton play prominent roles as the Lipstick-Face Demon resurfaces and another journey to The Further takes place. This is because Dalton begins to encounter the demons of his past after going to college, bringing Josh and his son back into the supernatural story. Insidious: The Red Door takes place 10 years after Insidious: Chapter 2, which was the last entry starring the Lambert family.

https://screenrant.com/insidious-red-door-post-credits/