Random Riddle: The Ransom

A rich man’s son was kidnapped. The ransom note told him to bring a valuable diamond to a phone booth in the middle of a public park. Plainclothes police officers surrounded the park, intending to follow the criminal or his messenger. The rich man arrived at the phone booth and followed instructions, but the police were powerless to prevent the diamond from leaving the park and reaching the crafty villain.

What did he do?

 

Random Riddle: The Ransom