The letters included a cross inside a circle as his signature ... Among what police found was his watch, a Zodiac Sea Wolf wristwatch, which had the same logo seen on the killer's letters.

The Zodiac name was used by the killer himself in taunting letters he sent to reporters, using a cross inside a circle as his signature - the same logo he scrawled on one victim's car. He also ...

Zodiac craved attention, and he knew how to get it. He was a market- ing genius, adopting a nickname and a logo (a circle with a cross inside it) that got him on the front page. He wrote elaborate ...

SAN FRANCISCO (KGO) -- It is the symbol most associated with the Zodiac Killer - the cross ... around his back and had a circle with cross hairs in the center," says retired Napa County Sheriff's ...

Many included what became his trademark symbol, a circle with cross hair symbols, and began with the words, “This is the Zodiac speaking…” In 2014, writer Gary Best said that his ...

While not much to go on at first, a search of the crime scene produced a cryptic, handwritten note that read, "This is the Zodiac the twelve sign will die when the belts in the heaven are seen." The ...

Each of the three letters sent to the publications were signed with a symbol: a circle with a cross through it. Online this week, people were quick to post samples of Nichol’s handwriting, pointing ...