The release of the movie "The Immortal Man" has raised questions about whether it can be watched without prior knowledge of the "Peaky Blinders" series. Some outlets are providing guidance on what viewers need to know before watching the film, with one suggesting that only a limited number of episodes from the series are necessary to understand the movie. The necessity of watching the "Peaky Blinders" series before "The Immortal Man" is being debated, with varying opinions on the matter.