David Edward Kelley (born April 4, 1956) is an American television writer and producer, known as the creator of Picket Fences, Chicago Hope, The Practice, Ally McBeal, Boston Public, Boston Legal, Harry's Law, Big Little Lies, and Mr. Mercedes, as well as several films. Kelley is one of very few screenwriters to have created shows aired on all four top commercial U.S. television networks (ABC, CBS, Fox, and NBC). Kelley was born in Waterville, Maine, raised in Belmont, Massachusetts, and attended the Belmont Hill School. He is the son of Boston University Terriers and New England Whalers hockey coach Jack Kelley, and played the game himself. Kelley was a stick boy for the Whalers during his father's time as coach, and the captain of the hockey team at Princeton University, from which he graduated in 1979 with a bachelor's degree in political science. Demonstrating early on a creative and quirky bent, in his junior year at Princeton, Kelley submitted a paper for a political science class about John F. Kennedy's plot to kill Fidel Castro, written as a poem. For his senior thesis, he turned the Bill of Rights into a play. "I made each amendment into a character", he said. "The First Amendment is a loudmouth guy who won't shut up. The Second Amendment guy, all he wanted to talk about was his gun collection. Then the 10th Amendment, the one where they say leave the rest for the states to decide, he was a guy with no self-esteem." Also while at Princeton, he was a member of the Princeton Triangle Club. He received his Juris Doctor (J.D.) from Boston University School of Law, where he wrote for the Legal Follies, a sketch comedy group composed of Boston University law students which still holds annual performances. He began working for a Boston law firm, mostly dealing with real estate and minor criminal cases. In 1983, while considering it only a hobby, Kelley began writing a screenplay, a legal thriller, which was optioned in 1986 and later became the Judd Nelson feature film From the Hip in 1987.

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