>> it was so airtight it was hard to use the crank to get the casket to open once it was raised you could see part of elizabeth ratliff's face and hair it was remarkable. >> reporter: they were stunned the body was practically intact. >> her fingernail polish was still on her dress was still perfectly in place. >> reporter: the m.e. took a closer look at the injuries to elizabeth's head she was finding lacerations, deep gouges in the scalp seven of them. >> seven lacerations you could -- black: it was amazing -- >> count them. >> it was uncanny. the lacerations were very similar to the ones that had been perpetrated upon kathleen peterson and in her findings, she made a decision that ms. ratliff had been -- had been murdered. >> reporter: investigators thought they'd hit pay dirt in death, they thought kathleen peterson and elizabeth ratliff could have been twins >> i'm just thinking that, that my case is getting a whole lot