One of New Hampshire’s longest-standing mysteries — the discovery of the remains of a woman and three children in Bear Brook State Park — was solved (kind of) when a young woman searching for her birth parents with DNA set off a series of events that revealed a cross-country serial killer.

Bob Evans — or Gordon Jensen, Lawrence Vanner, Curtis Kimball, Gerald Mockerman or any number of aliases — killed prolifically. And he seems to have mostly killed women he was in relationships with and their children. We trace the tangle that led to New Hampshire authorities determining he was responsible for the Bear Brook four, a mystery that had endured since 1985.

For links to stories containing the photos in our gallery, go to Tracing the Many Indentities of Bob Evans, on NH1.com; New Hampshire investigators pledge to identify Bob Evans victims, at Union Leader.com; and Face of a Serial Killer, Manchester InkLink.com