In a horrible castle (not too far away from your home) there lived a horrible Duke with his horrible wife and their horrible servants. One morning the Duke was dead–murdered by one of the other horrible people living in the castle.

When the residents of the castle were interviewed by the police, every person gave two correct answers and told one lie. This is what they said:

1. The Duchess
   1. I didn’t kill the Duke.
   2. The gardener killed my husband.
   3. I’m not guilty.
2. The Cook
   1. It wasn’t me.
   2. I have been working here for 27 years.
   3. The butler knows who’s done it.
3. The Butler
   1. I am not the murderer.
   2. The chambermaid is my witness; we were playing cards in the kitchen last night.
   3. The Duke was killed by the cook.
4. The Chambermaid
   1. I didn’t do it.
   2. I wasn’t even here last night.
   3. The gardener did it.
5. The Gardener
   1. The Duchess is lying when she says that I did it.
   2. I am innocent.
   3. The butler is the murderer.

Who is the murderer?

1. The Duchess
2. The Cook
3. The Butler
4. The Chambermaid
5. The Gardener