Sources:

Dana Bradley (1981)

• Murder of Dana Bradley - Wikipedia
• The Unsolved Murder of Dana Bradley: Thirty Years of Silence
• The ghost of Dana Bradley: The 1981 cold case that still haunts Newfoundland

Sharon Drover (1978)

• The mysterious case of Sharon Drover | CBC News
• The Times Transcript - October 14, 1995
• Last Seen Ep. 4: Mysterious case of Sharon Drover

The O'Brien Brothers (1996)

• 20 years later, Diana Saunders still searches for her 3 missing sons (Global News)
• Disappearance of Adam, Trevor, and Mitchell O'Brien (Wikipedia)
• MISSING: Adam, Mitchell and Trevor O'Brien (1996) - Torbay, Newfoundland and Labrador (Canada Unsolved)

Henrietta Millek (1982)

• MISSING PERSONS NEWFOUNDLAD & LABRADOR - Henrietta MILLEK (1982) — CANADA UNSOLVED
• Murdered? Or missing? | CBC News
• Vanished at the Key Club: The Henrietta Millek Mystery
• Last Seen Ep. 6: Missing? Or Murdered? What happened to Henrietta Millek?

William "Obie" Oberkiser (2011)

• Lost in Newfoundland: William Oberkiser