It's about detectives who are dead boys. They probably solve mysteries in the afterlife or something related to the supernatural world. That's a common theme in such stories.
Since it's about dead boy detectives, the main characters are likely those dead boys themselves. But without reading it, I can't give you specific names.
Well, The Walking Dead started as a comic series. But often, multiple issues of the comic are compiled and republished in a bound format, which is called a graphic novel. So, it's kind of both.
The novel may revolve around the dead boy detectives' exploration of the boundaries between life and death. They could be on a quest to understand the rules of the afterlife and how it all works. It might also involve them encountering various otherworldly creatures and beings, and using their unique perspective as dead boys to solve problems that the living can't. There could be a strong theme of mystery and discovery, as they peel back the layers of the afterlife's secrets.
Definitely! Dead Boy Detectives is a comic. It offers an interesting and engaging world for readers to explore with its distinct art style and plot developments.