"I saw blood all over the floor and blood all over the wall," she testified. "There was blood on the front of the stove and the dishwasher, and on the floor there were bloody footprints."
Lee, who has admitted to disposing of Berreth's phone, has pleaded guilty to tampering with physical evidence. Records showed Berreth’s phone traveled with Lee’s phone to Idaho where Lee says she destroyed it. She is awaiting sentencing once Frazee's case concludes.
The inmate says he and Frazee were in jail together from Sept. 26 to Oct. 12, 2019.
(MORE: Patrick Frazee's mistress offers gory testimony during Kelsey Berreth murder trial)
"He would pass me notes if his information was too sensitive," the inmate said, claiming Frazee told him he'd take care of him financially when he got out.
In court, a state investigator read from a number of those notes, which were written on paper towels and napkins. The notes, the investigator testified, contained hit lists, along with detailed instructions on where to find the witnesses. The list included Lee, her parents and her ex-husband.
"They all need to disappear, unseen until 11/22 after the trial," said a note, which the investigator testified appeared to be in Frazee's handwriting. "I'd really like to see Krystal with a bullet in her head."
'Patrick Frazee is not guilty'
Defense attorney Adam Steigerwald questioned the credibility of Lee and the evidence, saying in his closing argument Monday, "This case has been built on a foundation it cannot support. Patrick Frazee is not guilty."
Steigerwald argued that the case against Frazee is circumstantial and based on a story "made up" by Lee, adding she didn't cooperate with investigators until the district attorney agreed to a deal to not prosecute her for more serious crimes.
"There is not one word from Krystal Lee until she has a signature on the dotted line," Steigerwald said. "There is nothing she talked about that is believable."
Steigerwald also pointed out that neither Frazee nor Lee’s DNA were detected anywhere in Berreth’s condo, despite the prosecution theory that her condo was where Frazee killed Berreth and where Lee cleaned up the aftermath.
(MORE: Details of alleged gruesome bloody cleanup revealed in case against fiance accused of killing Kelsey Berreth)
Steigerwald also attacked evidence provided by a neighbor’s security camera, saying it did not show Frazee going onto Berreth’s home -- or coming out -- carrying a baseball bat or a tote.
In addition, Steigerwald said none of Berreth’s neighbors heard or saw anything suspicious on Thanksgiving, which Steigerwald called an unlikely day to plan a murder.
"Is there a day of the year when people are less likely to be alone? To be missed? To speak to your family than Thanksgiving Day?" Steigerwald asked the jury.
Frazee was arrested in December 2018 on charges including first-degree murder. Judge Scott Sells told the jury they can also consider finding Frazee guilty of second-degree murder or manslaughter.