Mark Shaw wasn't interested in writing about the assassination of the 35th president. He thought this horrible mark in American history was just that- horrible.

But after stumbling onto how reporter Dorthy Kilgallen might've been murdered because of her knowledge of the plot to kill Kennedy, well, he couldn't help himself. With a skilled reporter's eye, Mark tackled the case in four different books, each filling in with more detail how Kilgallen was murdered because of her diligent reporting.

We talked with Mark about his theory, what his research turned up and how he was seemingly being guided by Dorothy herself. For more information on Mark's work, check out his website dedicated to the case.

For some additional exclusive content, you won't hear in the interview, be sure to check out our YouTube channel.