The way Mr. Holmes pronounced MURDER with a background sound effect was quite funny. *chuckle*
I found this murder case quite challenging. It took me quite some time before I figured out the torn paper pieces were related to a keyword written on a card. After receiving a blueprint, I didn't know what to do next. Then, I tried using heat on the paint and I knew where to get a clue to to activate the alarm system. Next, I started a fire. Of course, the case solved by someone intelligent like me.
Thanks to Mr. Holmes who explained the story at the end. When he found the blood on the curtain, I was still confused about what had happened.