Lab Rats: The New Rat- Chapter 1: SHOCKER!!!!!

The Lab Rats team receive a surprise from Donald Davenport. He has finally grabbed the final sibling. Delaynee, the new lab rat was held prisoner by Donald's Evil Brother. She also has some scary news. Marcus is alive and One of the Lab Rats is working for Marcus and His evil Dad. Who is it? Adam, Bree or Chase? Or is it Delaynee? Note: In this book Adam, Bree and Chase are known as Lab Rats.