Avengers : Season 1, Episode 19: "Widow's Sting"

"Widow's Sting" - Hawkeye’s still out to take down the Black Widow, and he’s going to shake down every HYDRA agent on the planet to do it. Which is starting to tick off Nick Fury. Both Iron Man and Fury order Hawkeye to back off, but hey…it’s Hawkeye. So with S.H.I.E.L.D. babysitter Mockingbird at his side, Hawkeye infiltrates Hydra Island to take the fight right to the Black Widow. Will Hawkeye finally trust somebody enough to save his life?