Boo Radley was a much misunderstood character in the novel, feared and rumored upon by the local schoolchildren. He was described by Jem (brother of Scout Finch) as "6 1/2 feet tall... dined on all the raw squirrels and cats he could catch... you could never wash the blood off... there was a large scar that ran across his face... his eyes popped and he drooled most of the time". In fact, Boo Radley's house and chicken yard backed onto Maycomb School. Funny that - I remember Arthur Leigh Allen slaughtered chickens and squirrels and was never far from schools - but coincidence aside - we shall move on.
The Halloween Card had a knot-hole in the tree with the words "peek-a-boo" circled around it.. Peek-a-boo is the act of concealing ones face behind the hands or other object, before suddenly appearing back into view and uttering the words peek-a-boo. It can be seen in Wikipedia that many variations involve trees, similar to the depiction on the Halloween Card, where 'Hiding behind that tree' is added. See here. That eye was certainly hiding in the Halloween Card tree - was it not. Didn't the Zodiac Killer hide behind a tree at Lake Berryessa and hide his face behind a mask?. When he eventually came into view his identity was concealed. When the Halloween Card was removed from the envelope, it goaded us with the introduction "I feel it in my bones, you ache to know my name, and so I'll clue you in" - and once opened it revealed the word "BOO". I know what your thinking "Boo Who." Well, I had to squeeze it in.
The Eureka Card, mailed in the December of 1990 was the sister card to the Halloween Card, and was very similar in design. It too began with a message from our 'secret pal', yet this time it had a present from Zodiac - not an aluminium knife and pocket watch on a key chain - but a photocopy of a pair of keys on a key chain.
Incidentally, Scout and Jem went to a Halloween celebration. In the book on Chapter 28, the schoolchildren are encouraged to dress up in the local agricultural produce of Maycomb for the Halloween night pageant rather than go trick or treating. Scout is dressed as a piece of ham. While traveling home after the pageant, Jem and Scout are attacked by somebody and rescued by Boo Radley. As we all now know, Bob Ewell is later found dead under a tree with a knife stuck in him. It is curious that the skeleton on the Halloween Card is also wearing agricultural produce. Is that a pumpkin I see? And that tree keeps reappearing.
Was this card based on the Lake Berryessa attack, or could the Zodiac have been peeking out, playing hide and seek in the Julius Khan playground in the Presidio. I feel something in my bones. Anyway, here ends the story. The only question left to ask is, have I now created a second piece of fiction?