March a road next to carousel, so it stays on your right. You get to the crossroad, with a big puddle in the middle. Head to three trailers which detectives notice.
The green one is the most interesting, because of smoke going out of the chimney. Approach door - Holmes will make sure, that there is someone inside.
Go to the left side of trailer and to the window. Look through it and you'll see three russians brothers sitting inside. They have dynamite, needed to blow up a reservoir on the roof of factory. You have to think up something.
Notice an open, white-blue striped barrack opposite to the green trailer. You can omit entering it, but follow a road which runs along its right side. You should have wooden stairs in front of you.
Climb up and enter a red building on the other side of round square.