The Callahan Cousins #4: Together Again (No. 4)

Look out Gull Island! Neeve,Phoebe, Kate and Hillary - the twelve-year-old Callahancousins - are back at their grandmother Gee's ramblingseaside estate for Christmas break!When the girls camp out at a whale museum they stumbleupon a mystery they can't ignore. Phoebe takes the leadas the girls join forces to solve an islandmystery.