But it's a neat example of arguments about relevance and prejudice.
The accused was charged with murdering his father, and accused of trying to make it look like suicide. The police found a book called Forensic Clues to Murder at the accused's house. The spine was broken, so that the book opened at a page discussing a homicide case where the victim was shot and the crime was first thought to be suicide.
The Crown argued the book could have indicated to the accused that he could make a murder look like a suicide.