Question

A guy was found dead in his study by his friend. The victim’s friend called the police. He told them that when he was walking by the victim’s place, he thought that he would pay him a visit. But as soon as he wiped the frost on the window to peep inside, he saw his body lying on the floor and therefore immediately called the police.
The officer immediately arrested him for the murder of his friend. How did the officer know that he was lying?

Answer 1

Because the frost forms on the inside of the window not the outside

Answer 2

Answer:

If he visiting why would he go to the window to see if his friend was home and not the front door.