One key element is the disappearance of Jennifer Dulos herself. Another could be the people in her life, like her family and friends. Also, the investigation process.
In 'Gone Mom: The Jennifer Dulos Story', a crucial element is Jennifer Dulos' disappearance. This sets the whole narrative in motion. The family dynamics are also key. Her family's reactions, their efforts to find her, and any information they might have had about her situation before she vanished. The investigation is another major element. The forensic analysis, the interviews with witnesses, and the following of leads all play important parts. Moreover, the community's response to the disappearance, whether they provided support or had any information to contribute, is also an element that cannot be ignored. And of course, the mystery surrounding her disappearance - the lack of clear answers and the speculation that arises from that.