Unspeakable

An attempt to understand the mind of death row inmates, Diana Purlow creates a mechanism that can read into their minds. She is able to persuade the prison warden to allow her to use the killers as her guinea pigs to see if it actually works. As her experiments begin, she finds some very interesting information that could free one man if the judge allowed it as evidence. There are drawbacks to the experiment as well. She finds that out when she hooks the machine to a serial killer and sees the horrors that constitute his mental state.