Diane Sawyer Videos
New details emerge in alleged murder of pregnant Maryland teacher by boyfriend
Tyler Tessier was arrested for first-degree murder for the death of his girlfriend Laura Wallen.
Laci's Peterson's body discovered, Scott Peterson goes to trial: Part 2
Scott Peterson was convicted on murder charges after his pregnant wife and unborn child's bodies washed ashore in 2003.
April 24, 2003: Scott Peterson speaks out
Peterson tells Diane Sawyer he did not murder his wife and had nothing to do with her disappearance.
'Truth and Lies: The Murder of Laci Peterson' airs Thursday, Sept. 14, at 9 p.m. ET on ABC
'Truth and Lies: The Murder of Laci Peterson," Thursday, Sept. 14, at 9 p.m. ET/8 p.m. CT on ABC.
2009 town hall: President Obama answers America's questions
President Obama sat down with Americans to answer questions about health care in the ABC special "Questions for the President: Prescription for America."
Student from struggling Philadelphia HS beats odds, graduates from college
Christine Holland, then a senior, was part of the ABC News special report "Hidden America," on Strawberry Mansion High School.
Catching up with inspiring Strawberry Mansion students
ABC News' Diane Sawyer returns to Philadelphia to see what's changed since she first profiled the school in 2013.
Olivia Newton-John reveals her breast cancer has returned
The singer and actress will postpone her upcoming tour dates to seek "treatment and healing."
March 15, 1991: 'World News Tonight' - 4 LA police officers are indicted on assault charges
For Los Angeles Police officers were indicted today on assault charges stemming from that brutal beating of an unarmed man. The one in the videotape that created a wave of national outrage. Attorney general Dick Thornburgh said today the FBI will investigate with of the federal civil rights of the
Caitlyn Jenner talks about 'The Secrets of My Life'
The television personality and advocate appears live on "GMA" to discuss her new tell all book.