What about our only baby? Mine is I Don't Sleep (I Dream) (http://archiveofourown.org/works/552689): Inception AU with Natasha and Clint as the forger and point respectively. Other pairings included. It's rated M because there is violence, torture and language but nothing too graphic.

Summary: When Thor Odinson hires extractor Steve Rogers to perform an extraction and an inception on his brother Loki he knows he is going to need the best in the business. His team, however, is scattered after an accident left them minus a member. While the rest of his team prepares for the jobs of their lives Steve is haunted by the shade of Bucky Barnes. Will the best team in the business be able to perform two jobs on a single target or will Bucky follow through with his promise to ruin their reputations and their lives? And what of Thor's strange brother, Loki and what lies in his twisted subconscious?