Exculpatory evidence is the evidence favorable to the defendant in a criminal trial, which clears or tends to clear the defendant of guilt. It is the opposite of inculpatory evidence, which tends to prove guilt.

In many countries such as the United States, police or prosecutor are not required to disclose to the defendant any exculpatory evidence they possess before the defendant makes a plea (guilty or not guilty). Per the Brady v. Maryland decision, prosecutors have a duty to disclose exculpatory evidence even if not requested. Though it is true that the prosecution is not required to search for exculpatory evidence and must only disclose the evidence it has in its possession, custody or control, the prosecution's duty to disclose includes all information known to any member of its team, e.g., police, investigators, crime lab, etc.

In Brady v. Maryland, the U.S. Supreme Court held that such a requirement follows from constitutional due process and is consistent with the prosecutor's duty to seek justice.

Caylee Marie Anthony (August 9, 2005 – 2008) was an American two-year-old girl who was reported missing in Orlando, Florida, in July 2008, whose skeletal remains were found in a wooded area near her home in December 2008. Her then 22-year-old mother, Casey Marie Anthony, was tried for the first degree murder of Caylee but was acquitted. She was, however, convicted of misdemeanor counts of providing false information to police officers.

Caylee lived with her mother, Casey, and her maternal grandparents, George and Cindy Anthony. On July 15, 2008, Caylee was reported missing to 9-1-1 by Cindy, who said she had not seen Caylee for 31 days and that Casey's car smelled like a dead body had been inside of it. She said Casey had given varied explanations as to Caylee's whereabouts and finally admitted that day that she had not seen her daughter for weeks. Casey fabricated various stories, including telling detectives the child had been kidnapped by a fictitious nanny on June 9, and that she had been trying to find her, too frightened to alert the authorities. With the child still missing, Casey was charged with first degree murder in October and pled not guilty. On December 11, Caylee's skeletal remains were found with a blanket inside a trash bag in a wooded area near the family home. Investigative reports and trial testimony alternated between duct tape being found near the front of the skull and on the mouth of the skull. The medical examiner mentioned duct tape as one reason she ruled the death a homicide, but officially listed it as "death by undetermined means".

Ryan Ferguson is an Indie Rock guitarist and singer/songwriter, formerly of Southern California band No Knife. Ferguson's solo debut Three, Four was released in July 2005, winning a San Diego Music Award for “Best Pop Record” that year. The Sims 2 featured an interpretation of the album's lead track "Suddenly". He went on to tour with American Rock Band, Switchfoot, and released a full-length album entitled "Only Trying to Help" in 2007.

Katherine Anne "Katie" Couric (born January 7, 1957) is an American journalist and author. She serves as special correspondent for ABC News, contributing to ABC World News, Nightline, 20/20, Good Morning America, This Week and primetime news specials. Starting on September 6, 2012, she will host Katie, a syndicated daytime talk show produced by Disney-ABC Domestic Television. She has anchored the CBS Evening News, reported for 60 Minutes, and hosted Today and reported for Dateline NBC. She was the first solo female anchor of a weekday evening news program on one of the three traditional USA broadcast networks. Couric's first book, The Best Advice I Ever Got: Lessons from Extraordinary Lives was a New York Times best-seller.

As of May 2012, Couric also has a web show for ABC News, entitled Katie's Take, airing weekly on Yahoo.

Couric was born in Arlington, Virginia, the daughter of Elinor Tullie (née Hene), a homemaker and part-time writer, and John Martin Couric Jr., a public relations executive and news editor at The Atlanta Journal-Constitution and the United Press in Washington, D.C. Her mother was Jewish, but Couric was raised Presbyterian. Couric's maternal grandparents, Bert Hene and Clara L. Froshin, were the children of Jewish immigrants from Germany. In a report for Today, she traced her paternal ancestry back to a French orphan who immigrated to the U.S. in the nineteenth century and became a broker in the cotton business.