What are the two main lies in book The Curious Incident of dog night time?

It's tricky to define "lies" in the context of "The Curious Incident of the Dog in the Night-Time" because the narrative is presented through the lens of Christopher, a young man with autism. His perception of the world and his understanding of events are often different from what others might consider "truth."

However, there are two key instances where the novel directly addresses the idea of deceit:

1. The lie about Wellington's death: Christopher is initially told by his father that the dog, Wellington, was hit by a car. This information is later revealed to be a fabrication, and the truth emerges as Christopher learns his father was responsible for the dog's death. This lie is a significant turning point in the story, revealing the complex relationship between father and son and highlighting the ways in which Christopher's innocence is both protected and violated.

2. The lie about Christopher's mother: Christopher's mother leaves the family when he is young, leaving him with his father. Throughout the novel, Christopher is told by his father that she left because she didn't love him. This information is later revealed to be a lie, as Christopher discovers a letter from his mother explaining that she left due to her own struggles with mental health. This lie represents a betrayal of trust and underscores the emotional turmoil that Christopher has experienced throughout his life.

It's important to remember that the novel doesn't judge these actions as solely "lies." The narrative explores the complexities of truth, perspective, and the ways in which people cope with difficult realities. While these two events might be considered lies, they also serve as catalysts for Christopher's journey of self-discovery and his understanding of the world and the people in it.