No sooner said than done.
This scenario is based on a ?'real life' case.
a) The victim knew his attacker.
b) Just before 7pm he had let him into his house.
c) After the murder the attacker drew the curtains.
d) He had to then put the light on to see.
e) Removed the paintings after a search.
f) Opened one curtain forgot the other.
g) As the room was now lit also forgot the light.
h) Took the stolen goods to a lockup garage and went for a drink
i) Curiosity got the better of him so he walked back to the victims house
j) Near the house he passed two friends.
k) Frightened he would now be placed at the scene of the crime
l) He tried to play the ?'hero' and discover the crime.
He may have succeeded except for the fact that, as Montana has pointed out; (You also asked about the window)
"Now that I think about it, frost would only form on the inside of the window."
Harry had told police, "There was frost on the window; I had to wipe it away to see inside."
Case closed.
A case for Perry Mason.
The police were checking the place. Outside, Cary, Mr Alson's faithful Secretary, was a mass of nerves. Inspector Till was reviewing the facts:
1. Mr Alson has been murdered. The murderer buried a stiletto through the back of the chair and right through his heart.
2. All the place was a mess, but nothing seems to be lost. Some sheets of his desk had coffee stains, but Mr. Alson was not a coffee drinker. There was no coffee container of any kind in the office. There were a couple of gloves in the floor.
3. Cary had in her visit book just three announcements: Hari Colton (2:35), Louis Williams (3:10) and Joseph Markis (3:45). Cary says that Joseph was the only one to serve himself a cup of coffee in a paper cup.
4. The cup of coffee was found in Cary's wastebasket. She claims that Joseph entered Mr. Alson's office with the cup in his hands, and then he left it in her desk, so she took it and threw it away.
5. The stiletto had no fingerprints at all, but the paper cup was all covered with one type of fingerprint: Joseph's (they had a mobile fingerprint lab).
6. Mr. Alsen's wristwatch was broken, probably due to the fight, and it showed the time: 3:50.
Inspector Till then talked to Cary, to tell her she was under arrest.
Why did he suspect her