Some pretty weird stuff happened during the Kimberlin trial:

leagle.com

A principal issue arises from the fact that six witnesses had been hypnotized during the investigation of the bombings in the fall of 1978.
A motion to suppress the testimony of these witnesses was heard and denied before trial. There was testimony by the two hypnotists involved, by knowledgeable experts concerning the dangers of hypnosis, and by special agents of the Bureau of Alcohol, Tobacco and Firearms (ATF) who had been involved in the process. Tape recordings of the hypnotic sessions were placed in evidence, along with transcripts thereof and statements of the witnesses, taken in two instances before the hypnotic session.
Judge Steckler decided to permit the jury to hear the testimony of the hypnotized witnesses, with cautionary instructions. The form of the instruction given each time a hypnotized witness testified, was agreed upon by counsel. It told the jury not to attach greater weight or significance to testimony of witnesses who have undergone hypnosis than that given to the testimony of other witnesses, and that the jury may judge what effect, if any, the process of hypnosis had upon the witness’ memory and ability to recall.

Hypnotized witnesses? That’s tampering with memory, I think.