In Guyana after the Jonestown massacre, with the survivors and the dead.

Two 16-year-olds form a suicide pact, driving a Pontiac off a cliff. One of the boys survives:

To many of the people in Fillmore who considered the incident a cause for civic mourning and self-scrutiny, the idea of trying Joe for murdering his best friend seemed outlandish. To a prosecutor, however, the indictment had its own logic. The Ventura County district attorney, Michael Bradbury, was an aggressive law-and-order man, and he had a potentially strong case. With Joe's repeated announcements of his plan to drive off the cliff, the crucial element of premeditation was undeniably present.

Li Dao, a young Minnesota nurse, appeared in suicide chat rooms, contacted the most desperate, and made pacts to die with them via webcam. After some in the forum caught on, Dao disappeared; or rather, Dao had never existed at all. She was a middle-aged man. And he may have encouraged and witnessed dozens of live suicides.