welcome back. detective walt delsigne could not let go of the carol lubon cold case. after the california mom disappeared, police found no evidence of a crime. but over the years, carol s husband mike had made a few slight changes to his story about the night his wife vanished. now the detective was determined to dig into those inconsistencies. and mike was about to share a chilling new detail. what he told investigators would send the case into overdrive. here s keith morrison. for eight years, torrance police detective walt delsigne worried away at the carol lubon file, drawn by an irresistible hunch, that this young mother did not day peer voluntarily. but actual evidence of a crime? just wasn t any. so finally in 2010, 29 years