What bothers me is that the manner and cause of death had not been determined at the time of the preliminary hearing.
Savannah's body was identified and an autopsy was performed and we know the ME was apparently not able to determine the cause of death at that time, as that is what was reported after the hearing, which was gained apparently from the testimony that was given during the hearing. I'm sure if the cause of death was known and the manner of death had been determined as homicide, Sparks would have likely been charged with murder by now, which he may very well be in the future once the manner of death is known and if it turns out to be homicide.
When a body is found with their hands and or feet bound there is usually some evidence as to what caused that persons death such as blunt force trauma, stab wound(s), bullet wound(s), strangulation, asphyxiation to name a few. These causes of death can normally be determined during the autopsy. A perpetrator doesn't bind someone's feet or hands and wave their hand in the air and that person instantly dies with no injury. It usually takes some act of violence to kill someone that will leave a tell-tail sign that will be seen during the autopsy, and that must not have been the case here. If there was a struggle, bruising is likely to be seen depending on the decomposition and condition of the body.
I guess he could have tied her up, raped her, then poisoned her or killed her is some fashion like that which would leave no visible sign of trauma to the body. But that usually takes a long time for the person to die unless you have the right kinds of poison and I doubt this is the case.The tape would no doubt leave injuries to the body also if it were placed there while she was still alive.
And if someone is going to tie a victim up to rape them it would make more sense to bind their hands than their feet. Binding only the feet and not their hands makes no sense if you were planning on raping someone. I think it would be harder to rape someone with their feet bound together. I know it's harder to have sex with someone with their pants around their ankles. OK did I just say that, cripes what was I thinking
Her death could have been attributed to a drug overdose. Maybe they were doing heroin and she got a large dose of fentanyl.
I guess we will just need to wait until it is announce how Savannah died to see where this case goes.
JMO