Who's To Blame? is the ninth novel in the Welcome to Keystone series. Picking up immediately following the events of One Wild Night, the novel explores the consequences of the decisions that several of the characters made in the previous book. Summary from the back cover: After a horrifying car accident that has left her sister, Jody, in a coma, Keri Ann Lawrence is left to wonder who was driving the other car and whether or not she is the one responsible for her sister's condition. However, as her memory slowly reconstructs itself, she will soon realize that she is about to face a trial that will be much more challenging than the accident itself.Meanwhile, Cahuenga Riches has something much more important than being caught for her role in the car accident on her mind: Further ruining Johnny and Caterina Lawrence's reputations in the hopes of finally gaining the respect of her family. Will her dastardly plan be a success, or will the Lawrence siblings gain the upper hand when the truth about the accident is finally revealed? Georgia Riches thought that she was saving her husband and son from a lifetime in prison when she aided her daughter-in-law, Virginia, in foiling their latest plot to take control of Keystone. However, what was intended to be a perfect plan actually results in a nightmare that could wind up sending another family member to jail. When the dust settles, will Sylvester ever be able to forgive Georgia for her betrayal, or will her actions result in a permanent split between husband and wife?Finally, Delia Drake finds herself enduring the same humiliation as Johnny once pictures and videos from the rave that ruined his reputation start appearing online. As a result, she makes the drastic decision to break up with him in order to save her own image. But is it the right choice, or will she immediately regret it?