Solving riddles and picture puzzles is a great way to give your brain the exercise it needs. Brain games like sudoku, chess, and scrabble can help improve your critical thinking skills, sharpen your memory, and boost your productivity in life. Who is the criminal?

If you look closely, you can see that all of the costumes are really well made except for number 3. He was already wearing his stethoscope when he committed the crime and rushed to put on whatever he could find to create a costume: a skull mask, a vampire cape, the Hulk’s pants, and he even grabbed a bush to use as a t-shirt.