When a Pennsylvania woman becomes convinced her missing friend was murdered, she’s determined to figure out who killed her. After she goes missing herself, investigators are left to explore whether the cases are connected in this episode of Last Seen Alive.

Sources used to research this episode:

17 Years Later, Family of Phylicia Thomas Asks for Help to ‘Bring Her Home’ (Bill OBoyle / Times Leader)

I-Team: “Where is Phylicia Thomas? (WBRE/WYOU-TV)

I-Team: “Where’s Phylicia?” Part 2 (Andy Mehalshick / WBRE/WYOU-TV)

Family Believes Phylicia Thomas’ Remains Are On Hunlock Township Property (Ed Lewis /Times Leader)

Family of Phylicia Thomas Still Looking for Answers 14 Years Later (Jade Jarvis/ Fox56 News)

Missing Woman’s Birthday Marked (WNEP16 News)

‘Person of Interest’ Hangs Himself in Cell (UPI)

Woman Vanishes While Investigating Dead Friend’s Disappearance (True Crime Daily)

Five Years After Phylicia Thomas Disappeared, Her Family Waits for Answers (Bob Kalinowski / Citizens’ Voice)

Keep Posters Hanging, Don’t Stop Searching For Two Missing Women (Pauline Bailey Dorrance / Citizen’s Voice)

Family Ramps Up Search for Daughter (Jan O’Connell / The Times Leader)

Hope Still Burns for Missing Women (Kevin Owen Kearney / The Times Leader)

Pray for Phylicia Thomas, Who Is a Kind and Loving Young Woman (Melynda Delaney / Citizens’ Voice)

Search for Remains of Phylicia Thomas Turns Up Empty (Geraldine Gibbons / The Times Leader)

Beyond the Byline: 21-Plus Years Later, We Wait to Learn What Happened to Phylicia Thomas (Bill O’Boyle / The Times Leader)

Light a Candle for Phylicia Thomas — Feb. 11 Marks 22 Years Since She Went Missing (Bill O’Boyle / The Times Leader)

If you know anything about the disappearance of Phylicia Thomas, please contact the Pennsylvania State Police Criminal Investigations Bureau at 717-783-5524.