Whispers from the Grave

This is the book I've read the most times out of any book ever. I've recently lost my worn out copy that I've had for over 6 years!
Suki and Jenna are hanging out in the attic one afternoon in 2070 when Jenna uncovers an old diary and a photograph of someone who looks remarkably like her. When questioned, her mother refuses to discuss the matter. Suki, desperate to be popular, invites Jenna and a group of “cool” kids to participate in an experiment on psychokinetic (PK) abilities for her uncle, a scientist. Jenna's PK abilities are so tremendous that Dr. Grady urges her to test a new invention that would allow her to move back and forth between time. And Jenna desperately needs to go backwards in years. The diary she found actually belongs to her sister, Rita, who was murdered by her boyfriend; Jenna was a frozen embryo at the time. She is determined to try to prevent the tragedy. This futuristic romance/drama wanders down a long and involved story line. And while the main characters are absorbing and the events that surround them exciting, the book's tone lacks cohesion. The cover art, with its shimmering colors and raised letters, is designed to attract readers of horrific mysteries, but only truly dedicated readers will find satisfaction in this time-travel tale.