The fifth richest man in the Baker Street named Mr. Bill Richman is kidnapped. Sherlock Holmes is appointed on the case. At the crime scene, a note is found written by Mr. Richman. The note read:
"First of January, Fourth of October, Fifth of March, Third of June."
Sherlock knew that somehow, the killer name was hidden in the note. The following were the suspects:
Jack Richman, the son and the heir of property.
John Jacobson, the employee of Richman.
June Richman, the wife of Richman.

Sherlock took only a few moments to deduce the killer name. Can you tell who was the killer?

The kidnapper was John Jacobson.
All you have to do is read the note carefully.
First of January = First letter of January i.e. J.

The name is JOHN.