sergey parkhomenko: a spectre is haunting the streets of moscow. actors dressed as former communist leaders lenin and stalin, earning money by entertaining tourists. but for some people, stalin is no laughing matter. >> i am commander in chief josif stalin! sergey: saint petersburg, russia's second city. and home to a woman who is certainly opposed to any revival of nostalgia for stalin. olga miller shows us the few photos she still has of her father valentin - who stalin had murdered. he was arrested in 1937 and shot a year later. the authorities alleged he was a spy a charge that was never , proven. olga miller: either they faked his signature, or they tortured him into signing the confession. the signature looks different to the one i knew from his hand. he was then sentenced to death, and shot dead on january 18th. sergey: olga miller's niec mascha never met her grandfather. but she's followed in his footsteps, and works in a museum. valentin miller was an art historian - so the connection is both professional and personal. although his fe was