Dark of Night Mysterious Book Report No. 504 by John Dwaine McKenna Dark of Night, (Thomas & Mercer, PB, $15.95, 388 pages, ISBN 978-1-6625-0081-7), by Barbara Nickless, continues her inexorable march to fame with the latest installment of the adventures of her endearing and brilliant, but height challenged semiotician, Dr. Evan Wilding.  At four feet six inches tall, his body suffers from dwarfism, but his mind is brilliant as