The vocalist’s name is Tessa. On her notebook it is written “I’m diving into the DARK gloom End to start“. On the poster in the top right corner it is written DARK and underneath ASSET. “Asset” spelled backwards becomes TESSA.
The bassist’s name is Delilah. Her shirt features a cat, which is also present on the Freddy Mercury poster. The lyrics written on it are from the song “Delilah” by Queen.
The drummer’s name is Lisa. Inside her backpack there is a copy of the book “1984” by G. Orwell. On her backpack there is a sticker which also appears on the poster behind Delilah. The poster says “Local punk’o’matIc AnarchiSts bazAr”. If one selects the 1st, the 9th, the 8th, and the 4th letters from each word, the resulting name is LISA.

The front wheels of the bicycle are traveling more distance and making sharper turns. Thus, the red tracks (as shown on the image below) correspond to the front wheel, and the green tracks correspond to the back wheel.
Then, since the back wheel is always pointing towards the front wheel, we conclude that the bicycle is moving towards the right.

Slylock asked the fisherman to cast his line to their window. After the fishing line was in Slylock’s hands, he told the beaver to remove the remaining line from the reel and tie it to the end of the rope. Slylock used the line to pull the rope up and then went down along it.

1. There are 4 people.
2. They arrived a few days ago, enough so that a spider web can appear on the tent.
3. Judging by the paddles, they got there with boats.
4. There is a hen walking around the camp, so the closest village is not far away.
5. The leaves of the trees are larger at the south side, so the wind must be blowing from the South.
6. The shadow is pointing towards West, so it must be morning.
7. Alex went to catch butterflies.
8. Since Peter is on duty today – cooking food for the group, it was Colin on duty yesterday.
9. Today is August 8. Watermelons ripen in August.

He will use the lug wrench to remove the sunken car’s tires and release their air into the diving bell.

The cracks of the left gunshot end up right at the cracks of the right gunshot. Therefore the first gunshot is the one on the right.

There are stars over the moon, which is impossible.

Slylock thinks Harry fell through the ice, and after climbing out of the water, took off his wet clothes due to the frigid temperatures. The sleuth suspects the ape is nearby because the wet clothes are still unfrozen.

The tire track cannot be from a bike. The tracks were left by one thief pushing a wheelbarrow, full of stolen tools.

This was a murder, which was supposed to look like a suicide. These are some of the reasons:
1. The dead person has not finished their cigarette yet, which is a normal thing to do when someone commits a suicide.
2. The person is left-handed, judging by the position of the pen and the lamp, but is holding the gun in their right hand.
3. It was supposed to look like the person was writing a death note before killing themselves, but it is night and the lamp is not plugged in.