This might (!) be my favourite ever lesson!! Students work through background knowledge before taking on the role of a Politburo member investigating a mysterious 1934 murder (Kirov). Students work there was through the (superbly detailed!) 21 pieces of evidence to help them crack the case. Works brilliantly with a dead body on the floor and some crime scene tape/sirens! I hope your students enjoy this activity as much as mine always do!