The scene is actually dense with conflict, as the thought of Snape as double agent begins to percolate in the audience's mind when he does not expose a hiding Harry (Daniel Radcliffe) before committing the murder.

He also wrote that he successfully argued to cut one of his own pithy lines from the scene. Insider published a passage from the upcoming collection of Rickman's diaries, Madly, Deeply: The Diaries of Alan Rickman, that touches on a sequence in Harry Potter and the Half-Blood Prince, in which Snape kills Dumbledore (Michael Gambon) with the unmistakable death spell, 'Avada Kedavra.' Dumbledore's death marked the start of act three of the Harry Potter saga, but Rickman wrote that the moment was not done justice. Related: Why Alan Rickman Was The Only Actor To Get Harry Potter Spoilers

Rowling, and it's possible he felt the filmmakers' vision was at odds with the reality or significance of Snape's arc. Rickman was the secretly entrusted with information about emerging narratives by Harry Potter author J.K. Following his death, an auction of his belongings unearthed a personal letter sent to Rickman by producer David Heyman, revealing that Rickman felt Snape was still underdeveloped after two movies - fortunately, he stayed on, even while battling cancer. However, there were points of tumult, and he considered leaving the role to be recast after Harry Potter and the Chamber of Secrets.

Rickman was impactful in the role as Snape, and he was publicly grateful for his experience with the cast and crew.

Snape actor