Introducing 'What Happened to the McStays?'

In November of 2009, a family of four moved into a palm tree-dotted cul-de-sac in the hills of San Diego County.

Joseph McStay and his wife, Summer, were in their early 40s and living a seemingly charmed Southern California life with their two young sons.

Their new neighborhood was surrounded by mountains and farmland.

Their new house, a large Spanish-style home on Avocado Vista Lane.

It was around 10 years old with a stucco exterior and a red terracotta roof.

The McStay's home videos from around this time show an active, fun-loving family.

In one, little Joseph Jr. runs around the first floor of their new home.

This house is right here.

In another video, all four of the McStays bike to the beach.

Jay, come here.

Oh, my God.

[laughs]

Cadillac mama.

Oh, gee.

And then there's the video where the two McStay boys, Joseph Jr. and his big brother Gianni, swing side by side at a playground swing set together.

Their mom, Summer, pushes them higher and higher.

Rawr.

[gasps] Come on.

Ah! [laughs]

[laughs]

For a couple of months, these were the types of sounds that filled the McStay residence.

But one day in February 2010, the house went quiet.

Local station KGTV covered the story.

The outside of the McStay home remains exactly as the family left it.

Their shoes and the newspaper both outside.