Book summary

When a murder threat appears on a San Francisco bulletin board, most users of the system consider it an ugly prank. But when Jane Regalia, a divorcee living in an isolated cabin, tries to argue with its author, code named Snowflake, she is shaken by the warning "You have been noticed." When the victim of a series of brutal unsolved homicides is linked to a friend it seems that Snowflake's threats are becoming real.