Cathy’s Key (2008) is a novel continuing the storyline established in the first part of its series, Cathy's Book (2006). The story is written by Sean Stewart and Jordan Weisman, and illustrated by Cathy Briggs. As did its predecessor, the book takes the form of a 216-page journal written by the protagonist, Cathy Vickers. The book immediately picks up after book one of the series concludes, and follows Cathy in her quest to discover more about the mysterious and dangerous world of the immortals. Although many of the same characters (Emma, Cathy’s best friend, and Victor, Cathy’s boyfriend) are involved in the plot, there are also new characters introduced that complicate the storyline. For instance, a stranger met on a bus trip has developed by the end of the book into a major character, and new relatives such as Tsao, Victor’s father, appear in surprising and sometimes disturbing ways. At its most basic level, the plot involves Cathy attempting to navigate the treacherous world that the immortals inhabit while not imperiling herself or those she loves. Although high school graduation has come and passed and Cathy still doesn't have a job, she manages to keep busy by avoiding lovestruck immortals, trying to help her boyfriend discover the key to immortality, and in her free time delving into the mystery surrounding her father’s death. Although the story ends in another dramatic cliffhanger that leaves much to be resolved, Cathy’s saga continues in the third installation of the series, Cathy’s Ring (2010). Source: Wikipedia (en)