Kristin Leonetti, 23, was last seen the early evening of September 6, 2006, after her mother dropped her at an Alcoholics Anonymous meeting on MacDade Boulevard in Glenolden, Pennsylvania. A young mother who had given birth two weeks earlier and known to some as Little Niki, Kristin was reportedly in good spirits and wearing a blue shirt and a denim skirt.

She lived with bipolar disorder and had stopped her medication during pregnancy, and had a history of drug and alcohol problems and running away as a teen. She was staying with an aunt who was helping care for her newborn and was attending AA meetings. A few nights after she disappeared, Kristin’s mother received a call from Kristin’s boyfriend saying Kristin was with him and ‘‘flipping out’’ and that he would put her in a cab; Kristin never arrived and the boyfriend did not call back. The mother later found the boyfriend had bought lye, a chainsaw, and blood detection kits, which raised her suspicions, though no public identification or charges against him are reported.

Kristin was known to frequent Front Street and York Street in Philadelphia to buy drugs and had an active warrant for a sex work charge when she vanished. Leads from Philadelphia have been pursued but the case remains unsolved. Does anyone who knew Kristin or saw her in early September 2006 have information that could help explain what happened?