When Annamaria Phelps and Daniel Lauer turn up dead in a lovers’ lane area close to the Colonial Parkway in northern Virginia, many in law enforcement are convinced that this fourth double homicide in three years proves the work of a serial killer.

An entire region is on edge after college students Cassandra Hailey and Keith Call go missing from a lovers’ lane area in Northern Virginia. Is this third double homicide on the Colonial Parkway an unnerving coincidence or proof of a serial killer?

With Cathy Thomas and Becky Dowski’s Colonial Parkway homicide still unsolved, a new double murder less than a year later leaves law enforcement rattled. Are the slayings of David Knobling and Robin Edwards in another lovers’ lane area connected?

After Cathy Thomas and her girlfriend Becky Dowski are murdered, authorities are left to wonder if this is a hate crime or the birth of something more ominous.