The grave of Hendrika, a 21-year-old woman murdered in 19th-century Amsterdam, no longer exists, but her case remains one of the city’s most infamous unsolved mysteries. The disappearance and death of Hendrika caused a sensation at the time, leading some to compare her to a contemporary “Lisa” – referencing the modern-day attention given to missing persons cases. Despite extensive investigation, her killer was never identified, and the details surrounding her death remain largely unknown. The location of her burial, once marked, has now been lost to time on the Buitenveldert Catholic cemetery. The lack of a visible memorial underscores the enduring cold case status of the crime. The story highlights the challenges of investigating crimes in the 19th century and the lasting impact of unsolved murders on historical memory.