Jamie Christine Grossman was 24 and a mother of two when she vanished from the Lockwood/Billings, Montana area in early 2012. Official records often list January 12, 2012 as the last-seen date, but a fuller account places her at a birthday party in Lockwood on the night of March 16, 2012; other guests say she was gone the next morning. She was a 2005 graduate of Billings Senior High School and lived in Billings at the time.

Accounts of the end of the party conflict. One witness said Grossman and her boyfriend, Frank Hammontree, left together shortly before 2:00 a.m.; another says partygoers simply discovered she was missing when they woke. Hammontree reported her missing and later described taking her to a convenience store the morning of March 17, 2012, then dropping her off for a visitation, but the store surveillance did not show Grossman, Hammontree, or the vehicle he described. Someone used Grossman’s identification at a local pawn shop after she disappeared; a fingerprint lifted from the pawn ticket was not hers.

Family members pressed for an official missing person listing in June 2012 after rumors circulated that she was deceased. The Billings Police Department is the investigating agency and few definitive details have emerged since. If anyone knew Jamie, her movements that night, or saw her after March 16–17, 2012, investigators would like to hear from you?