The story of a mother of two called Nikki Addimando, who was admitted to police that she shot and killed her partner, beloved gymnastics coach Chris Grover, in their home. But did she pull the trigger in self-defense after enduring years of physical and sexual abuse at the hands of Grover, or did she stage the crime scene and murder her partner in cold blood?

Documentary special that investigates the 25-year-long case of what happened to Julie Jensen that just concluded last week.

The story of a Michigan mother of three Sharee Miller, who is sat in the center of a complicated love triangle.

As 2021 comes to a close, ABC News present its annual two-hour special highlighting the biggest moments of a historic year. With the country still fighting COVID-19, a groundbreaking inauguration, the Capitol insurrection, and continued protests for racial justice, 2021 proved to be a year unlike any other in modern-day history. "Good Morning America" co-anchor Robin Roberts anchors "The Year: 2021" alongside a team of ABC News anchors and correspondents. "The Year: 2021" features reports on the history-defining events of the year, including breakthroughs in space exploration and vaccines, the race to save the planet from global warming, and how America continues to rebuild and reopen following two years of living in a pandemic, as well as the most talked about times in pop culture, such as milestones in movies and television.

On 8 Dec 1980, the world stood still as it learned about the death of John Lennon, a music icon and former member of The Beatles.

A group of 20-year-olds whose mothers were pregnant with them when their fathers were killed in the 9/11 attacks and their families talk about their lives.

David Muir interviews survivors and family members who lost loved ones in the attacks on the World Trade Center, the Pentagon and United Flight 93 in Shanksville.

As a nation mourns its longest-reigning monarch, all eyes are on King Charles III, who will carry on his mother's legacy.

The life and legacy of Queen Elizabeth II after Britain's longest-reigning monarch dies at age 96.

A look back at the top stories, trends and entertainment obsessions that defined the last 12 months.