The detectives who cracked the case of Sherri Papini, a California mother who alleged she was kidnapped and held hostage for three weeks in 2016, reveal new details about the investigation that captivated the nation.

Detectives search for answers after 34-year-old mother Annastasia "Annie" Hester is stabbed to death in a Portland, Oregon suburb; investigators uncover personal details that point to multiple suspects and possible motives.