I don't know as I haven't read this particular novel. But typically in a novel titled 'Death in Chicago', you might expect characters like a detective trying to solve a murder, the victim or victims, and maybe some suspects or people related to the victim, such as family members or business associates.
I'm not sure specifically which 'Death in Chicago novel' you are referring to. There could be many novels with such a title or similar themes. You might try looking on book review websites like Goodreads, where readers often share their thoughts and critiques.
The city's diverse population has also had an impact. With different ethnic groups, cultures, and social classes coexisting, it gives writers a lot of material. In Chicago fictions, we can see stories about immigrants trying to make a living, or about the clashes and reconciliations between different groups. The city's rich history of labor movements, for example, has also inspired many fictional works that deal with the struggles of the working class.
There's no way to really tell if it's common specifically for someone named Jojo. However, in general, reading fanfiction is a popular activity among fans of many different franchises. The Jojo series has a large and dedicated fan base, so it's likely that there are fans named Jojo who partake in reading fanfiction, but we can't say for sure how common it is without more data.
A crossover could involve a character from Chicago Fire having a personal connection to a case the Chicago PD is working on. Maybe a firefighter's family member is wrongly accused of a crime. The firefighter then teams up with the PD detectives to clear their family member's name. This would bring in elements of loyalty, family, and the different skills of both groups. They could share information and resources to solve the mystery.
Perhaps this Jojo is interested in exploring different interpretations and stories within the Jojo universe that fans have come up with. Fanfiction often takes the existing characters, settings, etc. from the original Jojo series and creates new and unique storylines. So, this Jojo might be a big fan of the series and wants to see what other fans have imagined.
There was very limited information about Sylvie Brett in the film,"The Flames of Chicago." All we know is that Sylvie Brett is a character in the show, played by actress Kara Killmer. She was a firefighter and paramedic at the 51st station of the Chicago. However, the search results did not provide any detailed information about her plot development or storyline. Therefore, we are unable to provide an accurate answer for more information about Sylvie Brett.