What Happened to the McStays? - Cast

Cast	+ Add Cast
38 cast members

Name	Known for
David Muir Self - Co-Host Self - Co-Host See fewer	Life (I) (2017)
Deborah Roberts Self - Co-Host Self - Co-Host See fewer	20/20 (1978)
Matt Gutman Self - ABC News Chief National Correspondent Self - ABC News Chief National Correspondent See fewer	20/20 (1978)
Jesi Silvera Self - Friend of Summer McStay (as Jesi Silveria) Self - Friend of Summer McStay (as Jesi Silveria) See fewer	Disappeared (2009)
Lawrence Hemingway Self - Friend of Joseph McStay Self - Friend of Joseph McStay See fewer	20/20 (1978)
Gina Watson Self - Friend of Joseph McStay Self - Friend of Joseph McStay See fewer	The Executive Empress (2020)
Dan Kavanaugh Self - Business Partner of Joseph McStay Self - Business Partner of Joseph McStay See fewer	Z*Con: Proof of Concept Film (2013)
Pat Lalama Self - Crime Reporter / Self - ABC News Contributor Self - Crime Reporter / Self - ABC News Contributor See fewer	Volcano (1997)
Dennis Brugos Self - San Diego County Sheriff's Office (as Lieutenant Dennis Brugos (Ret.)) Self - San Diego County Sheriff's Office (as Lieutenant Dennis Brugos (Ret.)) See fewer	Disappeared (2009)
Itica Milanes Self - Former News Anchor, KGTV-TV, San Diego Self - Former News Anchor, KGTV-TV, San Diego See fewer	20/20 (1978)
Catherine Jarvis Self - Ex-Girlfriend of Chase Merritt (as Cathy Jarvis) Self - Ex-Girlfriend of Chase Merritt (as Cathy Jarvis) See fewer	20/20 (1978)
John Bluth Self - Dirt Biker Self - Dirt Biker See fewer	20/20 (1978)
Eddie Bachman Self - San Bernardino County Sheriff's Department (as Captain Eddie Bachman) Self - San Bernardino County Sheriff's Department (as Captain Eddie Bachman) See fewer	20/20 (1978)
Rob McMillan Self - Reporter, KABC-TV, Los Angeles Self - Reporter, KABC-TV, Los Angeles See fewer	Saving Dreams (2016)
Ryan Smith Self - San Bernardino County Sheriff's Department (as Captain Ryan Smith) Self - San Bernardino County Sheriff's Department (as Captain Ryan Smith) See fewer	20/20 (1978)
Britt Imes Self - Chief Deputy District Attorney, San Bernardino County Self - Chief Deputy District Attorney, San Bernardino County See fewer	20/20 (1978)
Raj Maline Self - Defense Attorney for Chase Merritt Self - Defense Attorney for Chase Merritt See fewer	20/20 (1978)
Chase Merritt Self - Convicted of Murder Self - Convicted of Murder See fewer	20/20 (1978)
Susan Blake Self - Mother of Joseph McStay (archive footage) Self - Mother of Joseph McStay (archive footage) See fewer	Vanished with Beth Holloway (2011)
Kevin Boles Self - FBI (archive footage) (as Special Agent Kevin Boles) Self - FBI (archive footage) (as Special Agent Kevin Boles) See fewer
Sean Daugherty Self - Deputy District Attorney, San Bernardino County (archive footage) Self - Deputy District Attorney, San Bernardino County (archive footage) See fewer	Two Shallow Graves: The McStay Family Murders (2022)
Victor Hanson Self - Summer's Ex-Boyfriend (archive footage) Self - Summer's Ex-Boyfriend (archive footage) See fewer
Donald Jones Self - Former Criminalist, San Bernadino County Sheriff's Dept. (archive footage) Self - Former Criminalist, San Bernadino County Sheriff's Dept. (archive footage) See fewer	The Real Murders on Elm Street (2024)
Lauren Knowles Self - Dan Kavanaugh's Former Girlfriend (archive footage) Self - Dan Kavanaugh's Former Girlfriend (archive footage) See fewer
Michael James McFadden Self - Husband of Joseph's Ex-Wife (archive footage) Self - Husband of Joseph's Ex-Wife (archive footage) See fewer	Two Shallow Graves: The McStay Family Murders (2022)
James McGee Self - Attorney for Chase Merritt (archive footage) Self - Attorney for Chase Merritt (archive footage) See fewer	Two Shallow Graves: The McStay Family Murders (2022)
Joseph McStay Jr. Self - Murder Victim in 2010 (archive footage) Self - Murder Victim in 2010 (archive footage) See fewer
Gianni McStay Self - Murder Victim in 2010 (archive footage) Self - Murder Victim in 2010 (archive footage) See fewer
Joseph McStay Self - Murder Victim in 2010 (archive footage) Self - Murder Victim in 2010 (archive footage) See fewer	E! Investigates (2008)
Michael McStay Self - Brother of Joseph McStay (archive footage) Self - Brother of Joseph McStay (archive footage) See fewer	Vanished with Beth Holloway (2011)
Patrick McStay Self - Father of Joseph McStay (archive footage) Self - Father of Joseph McStay (archive footage) See fewer	People Magazine Investigates (2016)
Summer McStay Self - Murder Victim in 2010 (archive footage) Self - Murder Victim in 2010 (archive footage) See fewer	E! Investigates (2008)
Juanita Merritt Self - Chase Merritt's Sister (archive footage) Self - Chase Merritt's Sister (archive footage) See fewer
Mike Ramos Self - District Attorney, San Bernardino County (archive footage) Self - District Attorney, San Bernardino County (archive footage) See fewer
Tracey Riccobene Self - Former Friend of Dan Kavanaugh (archive footage) Self - Former Friend of Dan Kavanaugh (archive footage) See fewer
Leonid Rudin Self - Digital Forensic Expert (archive footage) Self - Digital Forensic Expert (archive footage) See fewer
Dennis Shogren Self - Forensic Accountant (archive footage) Self - Forensic Accountant (archive footage) See fewer
Michael A. Smith Self - Judge (archive footage) (as Judge Michael Smith) Self - Judge (archive footage) (as Judge Michael Smith) See fewer	Two Shallow Graves: The McStay Family Murders (2022)

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