Thankfully there is lots of circumstantial evidence. And Sutherland was only trying to reconstruct what position everything would have been in, in order for the GSR to be on the pillow in that location, and had other facts to work with such as no GSR on the only hand that could've been used. (Nobody would put WM's hand under his face on the pillow after the fact). He's got a lot to work with, like the angle from where the shot entered, how far away the gun was from the eye, and where it lodged into the opposite side. Abrasions, stippling, or lack of it, etc.. there seemed to be lots to consider even if a body had slightly been moved. jmo.Probably won't happen, but what if DM himself were to testify that he touched/ moved his father's body - to check whether he was really deceased, only - before he called his mother & the police, but didn't want to admit that originally. It could cast doubt on Sutherland's reconstruction of the posture of the body and the likelihood he shot himself. Reasonable doubt, maybe?