Roadside crosses / Deaver, Jeffery

Body language expert Kathryn Dance and deputy Michael O'Neil investigate attacks on and murders of individuals who have posted messages about the deaths of two high school students on a local blog and suspect the driver in the fatal accident may be leaving roadside crosses as warnings about who his next victim will be.

The Monterey Peninsula is rocked when a killer begins to leave roadside crosses beside local highways - not in memoriam, but as announcements of his intention to kill. And to kill in particularly horrific and efficient ways: using the personal details about the victims that they've carelessly posted in blogs and on social networking websites.