5. speculate about information gaps

- no information about the the food Сlutter's might consumed before the death
Might be porrige
- no information about Dick's infacy
He might has had a happy infacy
- no information about what Mrs. Hickock (the detective) favourite music band was
He might didn't like music at all
- no information about Bobby Rupp's previous girlfriends (before he has met Nancy Clutter)
Maybe it was Julia Green
- no information about Cookie, what's happend when Perry droped her
Maybe she forgot him

imho there are no gaps in the novel, like in the painting, an artist never leaves a bare canvas. it's complete work