Kelly Dowling is found dead in the swimming pool in her house . She had hosted a party the previous night for her classmates before they all left for their respective colleges when her parents were away from home . The guests included Kerry’s Harvard-bound boyfriend Alan Crowley , with whom she had a serious fallout during the evening . Jamie Chapman , Kerry’s next door neighbor was also angry that Kerry had not invited him to her party . Or is there somebody else? Aline , Kerry’s elder sister pitches in to help the police bring the sister’s murderer to justice – She just doesn’t know that Kerry’s killer is ready to kill a second time to save himself .