The Bali ‘suitcase’ murder of a Chicago socialite shocked the world. One cop knew the family — and carries a terrible burden

It was a gruesome, unforgettable image: a bloodied suitcase with a woman’s body stuffed inside. Heather Mack, the pregnant daughter of American victim Sheila Von Weise-Mack, would later go to prison in Bali, Indonesia, for her murder, alongside her boyfriend Tommy Schaefer. As Schaefer returns to the U.S., Holly Baxter speaks to the police sergeant who knew them all