There are many important events in Monster by Walter Dean Myers. Defining something as the most important in a text is up to the reader and the answers must be considered as subjective. (Subjective means something is based upon an individual's opinions and feelings.) Therefore, when examining the fifteen most important events in Monster, many lists will not be exactly the same.
Outside of that, one could look at the following as being some of the most important events in the novel.
1. The opening of the novel. In the opening, readers find out that Steve is in a cell in jail. He is describing why the best time to cry is at night. This is important given it shows his fear.
2. The "scene" between Steve and his family. Here, readers see how his family members are affected by his arrest and trial.
3. The scene with the transcriptionist and the court officers. This scene is important because it shows the lack of sympathy those involved in the court/trial process. The transcriptionist only wants the trial to be long so that she can make more money.
4. The flashback to Steve and his brother. This scene is important because it shows Steve as who he really is (on the outside).
5. The scene with Steve running from the man who was almost hit by a rock he threw. This scene shows Steve's mischievous side. Could be looked at as criminal to support those who believe him to be guilty.
6. The scene with Steve on the porch talking about making money. Again, this scene could be examined further to try to convince others that Steve is guilty if one does not believe he is.
7. The scene where Steve is with his lawyer and asks her if they are going to win. This scene is important because it shows his lawyer's difference of opinion regarding his trial. She states that "it probably depends on what you mean by "win." Certainly, each of them have a different view on what win means.
8. The testimonies. Each of the testimonies given either support Steve's defense or dispute them. The fact that many of those who testify in the trail have criminal records show the problems of the courts.
9. The verdict. The verdict scene is important because of how both Steve's mother and lawyer react. Reader's can see why Steve's lawyer has acted as she has throughout his trial and why his mother has stood by him.
10. The closing scene. The closing scene of the novel provides closure for some and anger for others. Therefore, the conclusion is not a conclusion for some readers. Instead, the conclusion leaves some feeling as if they have found no closure.