What are the lies that Evie finds out about Peter in What I Saw and How I Lied?
In What I Saw and How I Lied, Evie learned about more than one kind of lie regarding Peter. She learned lies about his actions, and she learned lies about his morality and his character.
One of the lies Evie learned about was that Peter is a thief. After World War II, he stole valuable goods that the Nazi's had confiscated from Jewish prisoners and death camp victims. Moreover, his partner in this thieving was Joe.
Evie also learned that Peter was having an affair with her mother. Evie thought that her mother was being protective by insisting on acting as chaperon when Peter took Evie to movies and such, but really Peter was using the opportunity to set secret meeting times with her mother.
Another lie Evie learned about was that not only did Peter steal confiscated Jewish goods, he was blackmailing Joe to get his "fair share" of the money from the sale of the valuables because Joe was holding out on Peter and keeping the money all to himself.
[Along with an eNotes link to What I Saw and How I Lied are links to Judy Blundell's biography and Web site.]