Christopher was looking for his book after his father took it away. He found it in a box along with dozens of letters addressed to him. He only took one letter to read later.
Since it was storming outside, Christopher's father had to go fix an emergency flood. With his father gone, Christopher knew that it was safe to read all of the letters.
Christopher starts reading the letters addressed to him. It was very confusing to him because he thought his mother was dead, but these letters show that she is alive and that his father was lying. He began to feel very sick after realizing this.
Christopher becomes so overwhelmed with the news in the letters that he feels dizzy and sick, so he lays down to try and calm down and feel better. This does not help him cope, and he has a panic attack, gets sick on himself, and then blacks out.
Christopher blacked out for a very long period of time, and Christopher's father find him sick and realizes what happened. He tries to explain why he lied and apologize. He is also trying to help Christopher after he got sick.
Christopher's father runs to go turn on the tub so Christopher can get cleaned up. In order to help Christopher, Mr. Boone must touch Christopher, which would normally be very upsetting. Christopher does not yell or hit or react to the touch because he is still overwhelmed and recovering from his sensory overload.