I still can't find anything directly detailing the arrest and trial of Roy Summers, however I did find the following.
An appeal on behalf of Juanita Iwakiri was filed with the Idaho Supreme Court in 1984. Iwakiri, nicknamed "Tiny", was arrested and convicted for complicity in the kidnapping of Brandi and Tiffany. She is the sister of Molly Casner, who was reported to be Roy Summers' girlfriend at the time of the kidnappings. (Now we know where at least two of the AKAs came from). Iwakiri had contacted a lawyer, attempting to find out information on adopting the girls. At the time, Summers and Casner had left the area, leaving the girls in Iwakiri's care. She feared for the safety of the girls, and was seeking to adopt the girls before the two returned. Rebecca Boyer, Iwakiri's friend at the time, testified at Iwakiri's trial that she had seen the two girls at Iwakiri's home. The lawyer to whom Iwakiri had spoken also testified against her.
Iwakiri was initially sentenced to five years in prison, but was granted probation after five months and the charges were later reduced to a misdemeanor.
Boyer's testimony arose from two hypnosis sessions that, according to an opinion written by one of the judges, was not admissable. He also opined that the lawyer whom Iwakiri had sought advice from had violated lawyer-client privilege by testifying against her.
Some of the salient points from Iwakiri's trial:
On March 30, 1977, Brandi Summers and Tiffany Wise disappeared from their home in San Bernardino, California, after their mother, Beverly Wise, was murdered. The older girl, Brandi, was the natural daughter of Beverly and her first husband, Roy Summers, while Tiffany was the daughter of Beverly and Claude Wise, Beverly's husband at the time of the murder.
The girls and Roy Summers were subsequently sighted in various locations in Nevada and the southwest. In 1980 a Garden City resident (part of the testimony references a McKinney St. address) positively identified Brandi as having been in Boise from viewing a picture that investigators ran in The Idaho Statesman. Further investigation revealed witnesses who could place both girls in the care of <Iwakiri> and led ultimately to <Iwakiri>'s arrest in Boise in 1980.
At Iwakiri's trial on kidnapping charges the testimony of Rebecca Boyer was presented. Boyer had been hypnotized twice prior to trial in order to refresh her memory. The first hypnosis session was conducted by a detective with the Boise Police Department. Also present at that session were Boyer's attorney, Robert A, another detective, two investigators, an operator and recorder. Defense counsel was aware of the session, part of which was tape recorded. The second session took place shortly before trial at the Boise Hypnosis Center and was conducted by a Dr. S. The existence of a second hypnosis session was not revealed during discovery.
The key portion of Boyer's testimony consisted of an account of having seen the two missing children in appellant's home. She also testified to seeing a man, later identified as Roy Summers, in the house.
From the lawyer's testimony:
"A. <referencing an alleged phone call from Iwakiri> The person then said, 'Well, I have got an adoption question I wanted to ask you about.' I then said, 'Wait a second. I don't handle black market or under-the-counter types of adoptions. I will handle them if they are health and welfare type of adoption or if there is some religious or other organization involved that has a child, but I don't take things under the counter, next of kin or otherwise.'
"Q. Did the defendant make any statements to you after you had told her that?
"A. Yes. She responded, 'No, that is not what I'm talking about. The children are already here. They are my sister's--' I believe she said they were two girls. I think that she said that they were ages two and five but I am not totally sure about that.
"Q. Did she have occasion to make further comments at this time concerning these children?
"A. Yes. She told me, and again the sequence in which this occurred is a little bit vague in my mind. ...she stated that she was concerned about the two children because she did not think the sister and the boyfriend would take good care of them. The sister wasn't very--if I remember her words--consistent or concerned with their care. She also felt that the boyfriend had a tendency to be violent and might even physically harm the children; she was concerned about that. She also, at approximately this point in the conversation, indicated that the one of the two girls had medical problems.
"Q. Did she indicate what kind of medical problems?
"A. No, sir. She did indicate that it was something that would get worse with age and required an extensive amount of medication and that she was concerned about that. She didn't think the sister and the boyfriend would take adequate care of that medical problem. Towards the end of the conversation, she stated that the natural mother had in fact been killed. I don't remember whether she used the word killed or murdered. But in any event, had been killed, had not died a natural death. She also stated that the boyfriend had been involved in this killing.
"Q. She did?
"A. Yes, sir.
"Q. How did she state that?
"A. I believe her words were at that point in the conversation, that the natural boyfriend was about half crazy and that he had murdered or killed the California wife and that she was concerned that he might also physically harm the children or might physically harm her, Tiny.
From the testimony of Rebecca Boyer, which was disputed as being recalled and/or constructed during hypnosis sessions:
Rebecca Boyer was called to the stand and testified that Iwakiri contacted her after Iwakiri was first interviewed by the police and that Iwakiri told Boyer that she was going to tell the truth which was that Iwakiri's sister had had the missing children and that a man, presumably Roy Summers, had killed five or six wives. Boyer continued that she was interviewed by police February 6, 1980, and that she identified two photographs as being children that she had seen in Iwakiri's house. Boyer commenced the practice of calling either Officer W or Officer M whenever she thought of something that might be helpful in the case. On February 16, 1980, Officer W came to Boyer's house in response to a telephone call from her to hear about her reported remembering that Iwakiri wanted to adopt the two missing girls who were the subject of the case and who had reportedly been seen in the Iwakiri home by Boyer. Iwakiri reportedly told Boyer that her sister lived with a man in California who beat his wife and took two children and that the children were brought to Iwakiri's home. Boyer reportedly referred Iwakiri to Robert A, an attorney, for possible adoption of the children but Iwakiri decided not to use A. Boyer reportedly saw the two missing girls in the Iwakiri home and also in her home. Iwakiri reportedly said that the older girl had some kind of disease which got progressively worse (which would be consistent with cystic fibrosis). Iwakiri reportedly brought the two girls back from California in a pickup camper. Boyer reportedly saw Roy Summers in the Iwakiri home and was reportedly told by Iwakiri that Summers was Iwakiri's brother. After her arrest, Iwakiri reportedly told Boyer that she had kept the missing children in her home but that it had just been on a drop in basis. Under cross examination Boyer reported seeing two dark haired ladies with Roy Summer in the Iwakiri home. One of the dark haired women was heavy set and attractive and was reportedly introduced to Boyer as the wife of the man who Boyer identified as Roy Summers and who was reportedly introduced to her by Iwakiri as Iwakiri's brother. However, this heavy set dark haired woman was in fact Molly Casner, Iwakiri's sister. Boyer said she knew the person who she identified as Roy Summers as "Tiny's" brother.
Boyer reported seeing the missing children a total of five or six times.