Investigation Discovery Sunday

When a hole appears in the backyard, Delila Yang becomes suspicious of her mother. She works with police to unearth her mum's sinister secrets.

William Cosden Jr. coerced sisters, Karen and Susan, into keeping secret what he did. They reunite to repair the trauma keeping those secrets caused them

Death row inmate John Hummel agrees to a final interview weeks before his execution

While being questioned on the abduction of a barista, a local businessman makes a deal with police to reveal a secret life as a serial killer

When a 50-year-old woman is found dead in her home, all that's left behind is a note that reads, 'Chase me.' Police search relentlessly for the remorseless psychopath

Three locals are found brutally murdered in a quaint village in Maine. The killer leads detectives into the woods, where he buried his fourth victim

A case from June 1992 in which teenagers Suzie Streeter and Stacy McCall went missing after celebrating high school graduation. Suzie's mother also vanished

The case of Chris Smith, who moved to Southern California with dreams of success. After making a fortune, he decided to travel the world, but never returns home