Can you solve this murder mystery?

A man was found murdered one Sunday morning. His wife immediately called the police. The police questioned the wife and staff and was given these alibis: The Wife said she was in bed reading a book. The Cook claimed she cooking breakfast. The Gardener claimed he was planting seeds. The Maid claimed... show more A man was found murdered one Sunday morning.

His wife immediately called the police.

The police questioned the wife and staff and was given these alibis:
The Wife said she was in bed reading a book.
The Cook claimed she cooking breakfast.
The Gardener claimed he was planting seeds.
The Maid claimed she was getting the mail.
The Butler claimed he polishing the silver.

The police instantly arrested the murdered. Who did it and how did they know?
18 answers 18