Vanished Into Thin Air: “20/20” Explores the Enigmatic Case of the McStay Family

This week's "20/20" explores a case that truly baffled the nation.

Tonight on a brand-new episode of ABC’s 20/20, an investigation begins when an entire family seemingly vanishes into thin air, beginning a desperate search for answers.

What’s Happening:

  • Chief national correspondent Matt Gutman reports on what’s being called one of the “most baffling missing person cases in recent memory."
  • Joseph McStay, along with his wife Summer, four-year-old son Gianni and three-year-old son Joseph Jr., went missing – seemingly vanishing into thin air. When investigators search the home, they find the family’s two beloved dogs unattended outside, rotting food on the kitchen counter, and clothes strewn across the floor.
  • The case soon garners international interest when the family’s abandoned car is discovered near the Mexican border. Years would pass with no new leads or information on this family of four.
  • New interviews and evidence is presented in this California mystery airing on 20/20 this Friday, October 3rd (9:00-11:00 p.m. EDT) on ABC, and streaming the next day on Hulu and Disney+.

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