"48 Hours" investigates: "Alisa Mathewson's Night Terrors"

Investigators say Trevor Summers manipulated his children into believing he just wanted to get back together with his estranged wife, Alisa. However, his so-called reconciliation turned into a horrific 55-hour ordeal, one that almost cost Alisa Mathewson her life. Peter Van Sant gives "CBS Mornings" a preview of his "48 Hours" report.