That would be a pointer! Self-help books would provide clues as to whether the target had compatible neuroses.
2) As a child, what did you read under the covers?
Comics! They were kind of a guilty pleasure as they were seen as being inferior to books, which totally sucks. Plus a copy of Lady Chatterley discovered on my parents' bookshelf ...
And speaking of Dan Brown, check out this gem of a review from the New Yorker.
I'll bet Brown *never* reads such renderings-
3) Has a book ever made you cry, and if so which one?
Books don't normally have that effect on me, but .. Laurence Fearnley's Edwin + Matilda, in the closing scenes. Mother-son dynamics. Packed a wallop.