so, true story time: my dad was a HUGE fan of Dick Francis' mystery novels
Dad went to a signing and noticed this awkward-looking older woman by herself, there in some sort of support role but not really having much to do, and he struck up a conversation with her and learned she was Mary Francis
they spent a lot of that afternoon chatting
years later, it came out that SHE had written most of the books
Dad got a whole afternoon with his favorite author!