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FULL EPISODE: The Last Day

On June 28, 2014, 19-year old Marine wife Erin Corwin tells her husband she is going out to scout hiking trails in Joshua Tree National Park. She then vanishes without a trace. Dateline NBC's Andrea Canning reports.

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FULL EPISODE: The Last Day The Last Day, Part 2 The Last Day, Part 3 The Last Day, Part 4 The Last Day, Part 5 The Last Day, Part 6 The Last Day, Part 7 The Last Day, Part 8 The Last Day, Part 9 The Last Day, Part 10 The Last Day, Part 11 The Last Day, Part 12 Remembering Erin A Prosecutor’s Moment FULL EPISODE: At the Bottom of the Stairs At the Bottom of the Stairs, Part 2 At the Bottom of the Stairs, Part 3 At the Bottom of the Stairs, Part 4 At the Bottom of the Stairs, Part 5 At the Bottom of the Stairs, Part 6 The Jury in the Rintala Case Speak Out Remembering Annamarie FULL EPISODE: Secrets on Hot Springs Drive Secrets on Hot Springs Drive, Part 2 Secrets on Hot Springs Drive, Part 3 Secrets on Hot Springs Drive, Part 4 Secrets on Hot Springs Drive, Part 5 Secrets on Hot Springs Drive, Part 6 Secrets on Hot Springs Drive, Part 7 Secrets on Hot Springs Drive, Part 8 Secrets on Hot Springs Drive, Part 9 Secrets on Hot Springs Drive, Part 10 Secrets on Hot Springs Drive, Part 11 Secrets on Hot Springs Drive, Part 12 'I didn't think he would do it' FULL EPISODE: The Summer of Manson The Summer of Manson, Part 2 The Summer of Manson, Part 3 The Summer of Manson, Part 4 The Summer of Manson, Part 5 The Summer of Manson, Part 6 The Manson Girl Everyone Saw But Nobody Knew What Secrets Does Manson Family Hideout Barker Ranch Hold? Where Are the Manson Family Members Now? FULL EPISODE: A Shot in the Dark A Shot in the Dark, Part 2 A Shot in the Dark, Part 3 A Shot in the Dark, Part 4 A Shot in the Dark, Part 5 A Shot in the Dark, Part 6 A Shot in the Dark, Part 7 A Shot in the Dark, Part 8 A Shot in the Dark, Part 9 A Shot in the Dark, Part 10 A Shot in the Dark, Part 11 A Shot in the Dark, Part 12 Lucinda The Lip-Reader How Mock Trials Altered Cara Ryan’s Defense Remembering J.J. Rush

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FULL EPISODE: The Last Day

Past Seasons

Dateline in-depth

Missing in america

Mother of three vanishes from Colorado parking lot

Georgia mother of three vanishes from home

Georgia mother of three vanishes from home

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Mother of three vanishes from Colorado parking lot

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Dateline with Lester Holt FRI. 10 PM/9C

Please select another video.

FULL EPISODE: The Last Day

Past Seasons

Dateline in-depth

Missing in america

Mother of three vanishes from Colorado parking lot

Georgia mother of three vanishes from home

Georgia mother of three vanishes from home

South Carolina mom found safe less than two weeks after disappearing

Mother of three missing from Lexington, South Carolina

Arkansas father still missing after disappearing from family residence in July

Missing person case now a homicide investigation after actress's remains identified

Cold case spotlight

Kentucky woman last seen walking her dog still missing 22 years later

Georgia teen missing for two years returns home after living with 'a group of people from the Woodstock era'

Georgia teen missing for two years returns home after living with 'a group of people from the Woodstock era'

Single mother of Canadian 16-year-old Mekayla Bali still looking for her daughter on the two-year anniversary of her disappearance

Yakima Police still looking for leads in 27-year-old missing persons case of Susan Marable

Family desperate for answers in missing persons case that was not properly investigated for nearly 20 years

California parents plead for information on daughter's 2015 disappearance

Featured

Mother of three vanishes from Colorado parking lot

Georgia teen missing for two years returns home after living with 'a group of people from the Woodstock era'

Georgia teen missing for two years returns home after living with 'a group of people from the Woodstock era'

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Waffle House shooting: Suspect in killing of four taken into custody after manhunt

At least 9 dead, 16 injured in Toronto after van strikes pedestrians

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Police arrested Waffle House shooting suspect in the woods

Waffle House gunman stole car from BMW dealership before shooting

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Mother of three vanishes from Colorado parking lot

Cohen negotiated settlement between GOP fundraiser, former Playmate

Federal authorities seize classified advertising site Backpage

Missing person case now a homicide investigation after actress's remains identified

Police say Russian ex-spy, daughter were likely poisoned at their front door

Get Dateline Newsletter

Follow @datelinenbc

Follow Dateline

FRI. 10 PM/9C