Two chilling novels in one volume from #1 New York Times bestselling author Natasha Preston: THE TWIN and THE LAKE.After a tragic accident takes their mom’s life, twins Ivy and Iris are reunited. Iris feels her life is over. Ivy promises her twin that she can share her life now. After all, they’re sisters. Twins. It’s a promise that Iris takes deadly seriously in The Twin.  In The Lake, when Esme returns to Camp Pine Lake as a counselor-in-training years after helping to cove