Six Insidious movies have been released between 2010 and 2026. The original film, Insidious, debuted in 2010, followed by Insidious: Chapter 2 in 2013, Insidious: Chapter 3 in 2015, Insidious: The Last Key in 2018, Insidious: The Red Door in 2023, and Insidious: Out of the Further in 2026.

The franchise was created by Leigh Whannell and James Wan, who also developed the Saw series.

Chronologically, the series begins with Insidious: Chapter 3, then Insidious: The Last Key, followed by Insidious, Insidious: Chapter 2, Insidious: The Red Door, and finally Insidious: Out of the Further.

Streaming availability varies: Insidious, Chapter 2, and Chapter 3 are on Peacock; The Last Key is on HBO Max; The Red Door is on Disney+ and HBO Max; Out of the Further is currently in theaters. All titles are available for digital rental or purchase through Prime Video, and each film has a 4K Blu‑ray release except Out of the Further.

James Wan has indicated interest in crossovers with Blumhouse properties, and a spin‑off titled Thread: An Insidious Tale was announced in 2023 with Kumail Nanjiani and Mandy Moore attached, though details remain pending.

The franchise continues to expand, with future installments potentially linking to other horror properties.