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The expression, the eyes are the window to the soul, has been around a long time. In fact, so long that the question of who coined the phrase is debatable.

For years, the eyes have certainly inspired artists who use them more than any other body part to opine about love and life.

In Sovaclis version of the play, Etappus Rex, the eyes take on the meaning of truth. For those of you unfamiliar with this tale, Etappus unknowingly kills his father and marries his mother.

Even fathering children with her, he learns the truth from a blind prophet. Etappus then gouges out his eyes proclaiming, why should I have eyes? Why when nothing I saw was worth seeing?

He would rather have been blind than to see the reality of his life.

In 1876, a physiologist discovered a pigment hiding in the back of the eye that would bleach in the light and recover in the dark.

Today, it is known as Rodopsin, but back then, they called the retinal pigment Visual Purple.

Another physiologist named Wilhelm Kuhn created a process that fixed the bleach Rodopsin in the eye and developed an image from the result, called optograms.

He believed he could capture the retinas last images. Kuhn tested his theory on animals, strapping the animal in place to look at an object.

After three minutes, he would kill the animal and look at the eyes to see if they still had an image of the last thing the poor creature saw before it died.

This was not only cruel, it was utter nonsense.

But for decades, newspapers carried stories of people who claimed to use this technique to actually solve crimes.

It became the linchpin of many crime novels. Even French novelist Jules Verne used it as the crime-solving method in his book The Brothers Kip.

Most serial killers take a trophy from their victim or a memento to remember their kill.

Charles Albright took his victim's eyes, but why? Was he punishing them? Maybe stealing their soul or protecting himself? Or maybe he wanted to see himself as they saw him in the last moment before he took their lives?

Hi there, Wondry listeners. Hannah and Sruti here from TrueCram Podcast Redhanded. Your favourite podcast Redhanded.

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Any of you out there who haven't checked out Redhanded, what are you doing? What are you waiting for? It's a weekly show where we deep dive into the most talked about cases like the Delphine murders, and also those you might never have heard of like the Nathari Child sacrifices in Delhi.

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