A man was killed in his office. At the time of murder there were only four people in the office: Bill, Tom, Harry and Mike.
When police interrogated them, they gave the following statements.
Bill: “Tom did it.”
Tom: “Bill did it.”
Harry: “Tom’s telling the truth.”
Mike: “Harry’s not lying.”
After analysis, the police found out that only one person was telling the truth and the rest were lying. Can you analyse the statements and determine the killer?
Tom is the killer and Bill spoke the truth.
If Bill was the killer, both Tom and Harry will be telling the truth.
If Harry was the killer, none of the statements will be true.
If Mike was the killer, none of the statements will be true.