Both these novelists, as well as Stephen King, Lewis Carroll, Isaac Asimov, poet Sylvia Plath and post impressionist painter Vincent Van Gogh all have one thing in common, hypergraphia, the compulsion to express themselves through writing, which can have underlying causes such as temporal lobe brain injury, bi-polar disorder, schizophrenia, dementia and epilepsy, routinely affecting normal patterns of behaviour.
In one form, this results in the subject authoring text that means everything to the writer, but very little to the observer, as has been found in many of the letters and cards constructed by the Zodiac Killer over a five year period between 1969 and 1974.
Mirrored writing can also result from brain injury and a trait not uncommon to forms of dyslexia. Communication can also be expressed as rebus, where pictures or images are substituted as a representation for words, seen in some of the works of Lewis Carroll.
Bi-polar disorder is significantly more prevalent in writers than non-writers, whose compunction to put pen to paper can be increased during manic periods
Zodiac suspects such as Donald Lee Bujok, suffered from bi-polar disorder, heralded as a prime suspect by Zodiac researcher Kevin Robert Brooks, currently authoring the book 'Zodiac The Montana Connection'. Bujok sent copious articles to the Billings Gazette over many years and if indeed he was the killer in Northern California, the Zodiac letters, cards and ciphers would have been further testimony to his insatiable desire for literary expressionism. As for his other contact in the public domain, personal diaries and writings, this is a question that will possibly become more apparent at a later date.
To view a 15 minute video tabling the formative years of Donald Lee Bujok and more, visit here,
Lawrence Kane suffered a frontal lobe injury, sustained in an automobile accident in 1962 and a comprehensive analysis of this subject, along with a detailed description of his brain injury can be better explained by Alex Lewis, at his website
Richard Gaikowski thrust into the spotlight by Tom Voigt from zodiackiller.com, also suffered from a mental illness, treated at the Mount Zion Hospital in San Francisco, at which point all Zodiac communication ceased for approximately three years.
There is, as far as one can ascertain, no evidence to support that any of the high profile suspects in the Zodiac case, have ever been afflicted with hypergraphia, even in its milder form, but the Zodiac Killer's literary contribution to newspapers such as the San Francisco Chronicle and the like, coupled with his perceived manic ramblings, while paraphrasing Gilbert and Sullivan's Mikado in the Little List Letter mailed on July 26th 1970, may have just been the tip of one giant dripping pen, that we regret he ever had to write.