NPR's Weekend Edition host Scott Simon was recently in London with his wife and young daughter. During their stay, they ate at the Itsu Sushi restaurant, the infamous site where former Russian spy Alexander Litvinenko met with a contact before contracting fatal polonium-210 poisoning.
Traces of the radioactive element have been found at the restaurant. Simon's family has been contacted by Scotland Yard in its investigation. Robert Siegel talks with Simon about the experience.