Dr. V. Gyaan sat next to Inspector Dand, angry and defiant. She pointed a anger at the three people sitting across the table from her and said, “These people, Officer, cannot be trusted! They are my cut-throat rivals! They want to be the rest to publish their research. That’s why I’m sure one of them has stolen all my data and research. Or perhaps all three!”

“Please stay calm, Dr. Gyaan,” said Inspector Dand. “I will question all of them and resolve this matter. Please leave the room and let me handle your case.”

After Dr. Gyaan left, Inspector Dand questioned the suspects on their recent whereabouts one by one and recorded their answers.

After examining their accounts carefully, Inspector Dand figured that one person’s statement didn’t add up.

Which suspect was guilty of lying and why?