In 1994, a deadly fire claims a victim leaving her sister shaken by her death. A detective learns the fire was not an accident. A man learns the shocking truth about his brother's nature.

1990's. Portland, OR. A young woman survives a vicious attack... a mother sees her worst nightmare come true... and a detective investigating a series of murders finds the killer is someone he's met before.

Middle River, MD: On Christmas Eve, a mother waits for her son to return for the holiday dinner. A congregant makes a gruesome find when the pastor is late for his sermon. A detective uncovers dark secrets that will shatter a town's faith.

An 11-year-old makes a gruesome discovery when returning after a short trip. A woman is desperate to reach her mom. A homicide detective is shaken to her core by this murder case.

In the premiere, a father in 1996 Texas seeks revenge for the savage dismemberment of his son; a girl in Mississippi tries to escape the metal footlocker she has been imprisoned in; and a rookie detective is assigned a case that will define his career.