Police use hologram in effort to solve sex worker's cold case murder in Amsterdam

By a canal in Amsterdam's red-light district, one of the "window women" is actually a hologram which Dutch police hope will help solve the gruesome murder of a sex worker in 2009.

Peering through a frame out onto passers-by, a human-sized likeness of Bernadett "Betty" Szabo -- in skimpy shorts and a leopard-print bra, a dragon tattoo covering much of her torso -- taps the pane and fogs the glass with her breath.

The word "HELP" appears, chillingly, on the screen.