Skater girl or supernatural samurai? Rileigh Martin wants to believe that adrenaline gave her the strength to fend off three muggers in the mall parking lot. But adrenaline doesn't explain the voice in her head giving her battle tips and warnings. While worrying that she's going crazy (always a reputation ruiner), Rileigh gets a visit from Kim, a handsome martial arts instructor, who tells Rileigh she's harboring the spirit of a five-hundred-year-old samurai warrior. Relentlessly attacked by ninjas, Rileigh has no choice but to master the katana—a deadly Japanese sword that's also the key to her past. As the spirit grows stronger and her feelings for Kim intensify, Rileigh is torn between continuing as the girl she's always been and embracing the warrior inside her.

Is Rileigh’s only hope for salvation to team up with her sworn enemy? Rileigh Martin just wants to do normal teenage things, like go on romantic dates with Kim, her boyfriend and past life soul mate. Although that seems impossible when she’s the reincarnation of Senshi, a fifteenth century samurai warrior. After a ninja ambush leaves her unable to control her ki powers, Rileigh vows to get them under control before her friends lose more than their eyebrows. But when Kim leaves her for his past life betrothed and the other samurai stop talking to her, Rileigh realizes she doesn’t have any friends left to worry about. As the ninja attacks increase, Rileigh learns that the reincarnated kunoichi, a powerful female ninja, wants to kill her in order to reclaim her destructive powers. Alone and with increasingly unstable powers, Rileigh’s only offer of help comes from Whitley, her sworn past life enemy. Rileigh knows she doesn’t stand a chance against the kunoichi by herself, but Whitley’s sudden allegiance might be hiding a much deadlier agenda.

Can Rileigh stop a vengeful ninja before she's trapped forever? Reincarnated samurai Rileigh Martin may have just graduated high school, but she feels like there isn’t much to celebrate. Her boyfriend Kim doesn’t remember who she is, her past-life enemy Whitley has returned, and her future is unclear. When Kim suddenly regains his memories, Rileigh is overjoyed―until she realizes that Sumi, a powerful, reincarnated ninja, has also regained her memories. In the aftermath of Sumi’s attack, Rileigh’s ki powers are draining away and the Network unexpectedly starts hunting her. With time running out, Rileigh must track down Sumi before her powers completely vanish and she’s forever seen as the enemy. This jaw-dropping conclusion to the Katana series―heralded by Booklist as “an action-packed page-turner”―delivers knock-down-drag-out action, cleverly rolled up with a romance that spans lifetimes and a friendship that survives a supernatural effort to tear it apart. "A swift tale of romance for the young teen with a warrior heart."― KIRKUS REVIEWS