When adult Scout told us she would be writing about her childhood.
Climax
When Scout, Jem, and Dill spent their younger years worried about Boo Radley.
Falling Action
Jem grew up, the kids started to see bigger problems, like racism. Aunt Alexandra and Atticus tell the children how they need to grow up and act more like a noble family.
Conclusion
When Tom Robinson was on the trial for raping Mayella Ewell. He was convicted guilty with a punishment of death.
Tom Robinson dies. Bob Ewell continues to get more aggressive, towards Helen and especially to Atticus.
Bob Ewell tried to kill the kids to get back at Atticus. Boo Radley saved the kids and kills Bob in the process. The kids live safely and Boo was never seen again.