Booklist Online has a great review of Exposure up – check out this excerpt:
The fourth volume in the Virals series is as fast-paced as the previous outings about four teens bound together by special heightened senses after being exposed to a virus carrying wolf DNA. Oddities in their powers—surging and blinking at the worst possible moments—keep them on their toes as they investigate the kidnapping of three Charleston, South Carolina, prep school classmates. The low country atmosphere of historical homes, sand dunes, and magnolia-lined lanes adds great atmosphere, while a twist at the end offers a new plot thread begging to be expanded. Fans will eagerly await the next installment.
— Karen Cruze, Booklist