Summary of the admissions that Yust made to others about the killings (some of the expected witnesses):
KR - 4/26/10: A bandmate who was also a roommate of Yust's in 2007 told Belton investigators that Yust said something bad had happened to Kara and he snapped. Yust said he was angry with Kopetsky because she wouldn't love him, and he didn't want her to love someone else.
KF - 1/22/11: Yust ex-girlfriend contacted Belton police and said that Yust told her he choked Kara to death, picked up her body and hid it in the woods.
KF - 2/4/11: KF reconnects with police and tells a more complete story. She said that Yust described choking Kara, watching her take her last breath. He said he stared at her body before moving it to the woods.
CM - 8/19/11: A previous girlfriend of Yust tells Kansas City investigators that he choked her and told her that he had killed his girlfriends before and would not hesitate to kill her too.
SD - 6/5/12: Friend of Yust told police that in early 2012 Yust told them that he had choked Kara out, looked at her body before taking her to the woods. Yust further described they were having relationship problems and had a physical struggle before he killed her.
JC - 3/28/16: Cell inmate of Yust in Oklahoma says that Yust asked him for an alibi after the police interview in September of 2015. The inmate said Yust admitted that he had killed Kopetsky by choking her and then disposed of her body.
Jessup - 9/10/2016: Kylr's brother Jessup contacts Belton police and said he was with Yust when he admitted that he strangled and killed Runions. Yust also told that witness he had dragged her body into and undisclosed wooded area, but couldn't drag her very far.
* This testimony will be delivered by pros as Jessup is now dead. It remains to be seen what they can present regarding Jessup's death and how it may be connected.
AC - 10/5/2016: Belton police interview a former roommate of Yust and CM, who said about 3-and-a-half years earlier Yust told him that he killed Kopetsky and no one would ever find the body unless he told them where it was. It is unclear why LE didn't interview AC back when CM went to LE (he lived with CM and Yust at the time)
We can additionally expect family members (Kara mom, dad, stepdad, Jessica mom, Jessica's bf JM, Kylr Grandfather, possibly dad, Jessup's wife/gf)
Lt Brad Swanson will definitely be on the stand, possibly Capt. Kevin Tieman, the mushroom hunter that found the bones, the friend of Kylr who's farm is connected to the land they were buried on (or owns the land, it was unclear) and the witness that saw the red truck belonging to Kylr on the road next to the woods they were later found, all of the experts to cover the video, text messages/phone records.
This may be the best Twitter btw, they have been working with the Kopetskys for a long time and going to the hearings:
https://twitter.com/SarahPlakeTV
https://twitter.com/AndyAlcock2
https://twitter.com/sheraehoneycutt