The I-70 killer disappeared without a trace after committing several murders in the mid-1990s. Similar murders occurred throughout the 20th century, where the killer popped up, went on a killing spree, and then disappeared. Why? Where did he go? Camille Hart, a private detective, traced the murderer back to the 19th century with the infamous Dublin party that met disaster on the Oregon Trail. Was this the same killer, and how did he travel through time? The pen. The same pen that was found by her twin sister's body was also found by the most recent murder victim in 2023. Can Camille race against time before the killer strikes again or before he catches on to her motive? And what of the Dublin party? What really happened to those families?