Sister Spy (Alias Prequel #4)
Sydney is on another mission for the CIA. She has been assigned to join a sorority to investigate why another fellow CIA agent, Jen, that was in the sorority has died. As it happens, the sorority is going on vacation in Hawaii which also gives Sydney the opportunity to complete an assignment that was originally given to Jen: to retreive a deadly bomb lost in the bottom of the waters of Pearl Harbor. However, the same sorority sister that killed Jen is now on Sydney's tracks and will not hesitate to kill again.
Great book! I think many people will enjoy it. Read the Alias series, it is soooo good!