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Stephen McFeely (born February 24, 1970) is an American screenwriter and producer who often works with his writing partner Christopher Markus. McFeely was the second and the third most successful screenwriter of all time in terms of U.S. box office receipts, with a shared total gross of over $3.1 billion. However, overall, they are the highest-grossing screenwriters in the worldwide box office, with a total gross of $9.3 billion.

McFeely gained worldwide recognition with Markus for their works that include The Chronicles of Narnia film franchise and the Marvel Cinematic Universe (MCU), having written the first three Captain America films (The First Avenger, The Winter Soldier and Civil War), in addition to Thor: The Dark World, Avengers: Infinity War, and Avengers: Endgame, which is currently the second highest-grossing film of all time unadjusted for inflation. Both also created ABC's Agent Carter TV series, set in the MCU.

Description above from the Wikipedia article Christopher Markus and Stephen McFeely, licensed under CC-BY-SA, full list of contributors on Wikipedia.