Media Summary: 20/20 Part 1: The gunman, the hero teacher and other details of the Troubling picture of Connecticut mass murderer slowly emerges. In December 2012, 20-year-old Adam Lanza killed his mother before driving to

Sandy Hook Elementary School Shooter - Detailed Analysis & Overview

20/20 Part 1: The gunman, the hero teacher and other details of the Troubling picture of Connecticut mass murderer slowly emerges. In December 2012, 20-year-old Adam Lanza killed his mother before driving to Extensive police report includes images of Amy Robach on how teachers hurried to save student's lives. Adam Lanza's father opens up about his son, the victims and their families.

On the morning of December 14, 2012, a lone A new report provides new photos and details about the

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Newtown massacre: A timeline of events
Tragedy at Sandy Hook Elementary School: What Happened During Newtown, Connecticut Shooting?
Sandy Hook Elementary Shooting: Who Was Newtown Gunman Adam Lanza?
The Childhood of a Killer | Raising Adam Lanza, the Sandy Hook Shooter | Documentary
Sandy Hook Elementary Shooting: Gunman Adam Lanza Got Guns From Mother
Sandy Hook Shooting Investigation Report: Grim Details, No Motive
Connecticut Shooting: Sandy Hook Elementary Teachers' Reactions to Gunshots - ABC News
Mass Shooting at Sandy Hook Elementary School | Flashback | NBC News
How Tragic Events Unfolded at Sandy Hook in Connecticut
Sandy Hook Shooter's Father Describes How Son 'Changed'
Sandy Hook Shooter's Dad Wishes Son Had Never Been Born
Remembering School Massacre | SURVIVING SANDY HOOK | Full Crime Documentary
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Newtown massacre: A timeline of events

Newtown massacre: A timeline of events

The

Tragedy at Sandy Hook Elementary School: What Happened During Newtown, Connecticut Shooting?

Tragedy at Sandy Hook Elementary School: What Happened During Newtown, Connecticut Shooting?

20/20 Part 1: The gunman, the hero teacher and other details of the

Sandy Hook Elementary Shooting: Who Was Newtown Gunman Adam Lanza?

Sandy Hook Elementary Shooting: Who Was Newtown Gunman Adam Lanza?

Troubling picture of Connecticut mass murderer slowly emerges.

The Childhood of a Killer | Raising Adam Lanza, the Sandy Hook Shooter | Documentary

The Childhood of a Killer | Raising Adam Lanza, the Sandy Hook Shooter | Documentary

In December 2012, 20-year-old Adam Lanza killed his mother before driving to

Sandy Hook Elementary Shooting: Gunman Adam Lanza Got Guns From Mother

Sandy Hook Elementary Shooting: Gunman Adam Lanza Got Guns From Mother

Brian Ross investigates

Sandy Hook Shooting Investigation Report: Grim Details, No Motive

Sandy Hook Shooting Investigation Report: Grim Details, No Motive

Extensive police report includes images of

Connecticut Shooting: Sandy Hook Elementary Teachers' Reactions to Gunshots - ABC News

Connecticut Shooting: Sandy Hook Elementary Teachers' Reactions to Gunshots - ABC News

Amy Robach on how teachers hurried to save student's lives.

Mass Shooting at Sandy Hook Elementary School | Flashback | NBC News

Mass Shooting at Sandy Hook Elementary School | Flashback | NBC News

On December 14, 2012, a

How Tragic Events Unfolded at Sandy Hook in Connecticut

How Tragic Events Unfolded at Sandy Hook in Connecticut

Half an hour after classes began at

Sandy Hook Shooter's Father Describes How Son 'Changed'

Sandy Hook Shooter's Father Describes How Son 'Changed'

Adam Lanza's father opens up about his son, the victims and their families.

Sandy Hook Shooter's Dad Wishes Son Had Never Been Born

Sandy Hook Shooter's Dad Wishes Son Had Never Been Born

The father of Newtown

Remembering School Massacre | SURVIVING SANDY HOOK | Full Crime Documentary

Remembering School Massacre | SURVIVING SANDY HOOK | Full Crime Documentary

On the morning of December 14, 2012, a lone

New photos released from Newtown shooting

New photos released from Newtown shooting

A new report provides new photos and details about the