우체국 살인사건 [Post Mortem]

A few nights before Christmas, the city of Kansas was rocked by several cases of violent homicides taking place inside the city’s post office. The double murders have claimed the lives of 2 employees. The lack of clues and seemingly random killings have baffled investigators. One of the victim's wife, Mrs Barrier, has hired you and your team to crack this enigma. Difficulty level: 6/10