Mr. Joun was found dead in his study by Mr. Jacob. Mr. Jacob recounted his misty discovery to the police. “I was walking by Mr. John`s house when I thought I would just pop in for a visit. I noticed his study light was on and I decided to peek in from the outside to see if he was in there. There was frost on the window, so I had to wipe it away to see inside. That is when I saw his body. So I kicked in the front door to confirm my suspicions of foul play. I called the police immediately afterward.” The Police officer immediately arrested Mr. Jacob for the murder of Mr. John. How did he know Mr. Jacob was lying?