Katrina Kirby is a detective. People call her 'K'. There has been a murder in a big country house. 'K' knows that one of five people murdered Sir Michael Gray. Who did it? How? Why? This is a detective story with a difference: 'K' needs your help with her case.

Katrina Kirby is a detective. People call her 'K’. There has been a murder in a big country house. 'K’ knows that one of five people murdered Sir Michael Gray. Who did it? How? Why? This is a detective story with a difference: 'K’ needs your help with her case.