Yawnnnnnn
“Dad was not the Zodiac, second daughter insists”
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/05/02/MNP217CT9B.DTL&type=printable
Turns out Perez (the woman in the article) is his step daughter, brought to the U.S. with her mother by Henderson. His real daughter has some fairly goofy reasons for denying Perez' story. Will be interesting to see how this plays out.