The Last beginning

"Sixteen years ago, after a scandal that rocked the world, teenagers Katherine and Matthew vanished without a trace. Now Clove Sutcliffe is determined to find her long lost relatives. But where do you start looking for a couple who seem to have been reincarnated at every key moment in history? Who were Kate and Matt? Why were they born again and again? And who is the mysterious Ella, who keeps appearing at every turn in Clove's investigation? For Clove, there is a mystery to solve in the past and a love to find in the future, and failure could cost the world everything"--Amazon.com.