Dutch police use hologram in bid to solve cold case murder of Amsterdam sex worker

By Catherine Nicholls, CNN (CNN) — In Amsterdam’s Red Light District, the hologram of a woman sits behind a window. She looks out at passers-by, then appears to knock on the window and breathe on the glass. The glass seemingly fogs up, and the word “help” appears. This hologram is modeled on Bernadett “Betty” Szabó,