Maxim Petrov
Maxim Vladimirovich Petrov (Russian: Максим Владимирович Петров, born 1965) is a Russian serial killer, convicted for the killing of 11 people in St Petersburg between 1999 and 2000. Petrov, nicknamed Doctor Death by the Russian media, was a practicing doctor who targeted patients from a local health center, killing them by lethal injection at their homes then robbing them.