Inception articulate some of the things that have been swirling around his head for the last eight years." DiCaprio and Nolan spent months talking about the screenplay. Nolan took a long time re-writing the script in order "to make sure that the emotional journey of his character was the driving force of the movie." On February 11, 2009, it was announced that Warner Bros. purchased "Inception", a spec script written by Nolan. Principal photography began in Tokyo on June 19, 2009, with the scene where Saito first hires Cobb during a helicopter flight over the city. The production moved to the
Inception company. In return, Saito promises to use his influence to clear Cobb of a murder charge, allowing Cobb to return home to his children. Cobb accepts the offer and assembles his team: Eames, a conman and identity forger; Yusuf, a chemist who concocts a powerful sedative for a stable "dream within a dream" strategy; and Ariadne, an architecture student tasked with designing the labyrinth of the dream landscapes, recruited with the help of Cobb's father-in-law, Professor Stephen Miles. While dream-sharing with Cobb, Ariadne learns his subconscious houses an invasive projection of his late wife Mal. When the elder Fischer dies