You look in the folder again and find a copy of the ransom note. It is written in brown ink. The police report states that there were no fingerprints or other identifying marks on the note. The house and guests were searched for the brown pen. An ink pen with brown ink was found on both Mr. Green and Professor Plum and a brown marker found in the kitchen. You are needed to analyze the ink from the note to determine if either of the inks found at the time of the incident was the one that was used in the ransom note.
Show your child this which shows how we determined which pen wrote the note, which may give you an important clue OR click here to find directions on how you can duplicate the experiment yourself.
When you are ready to go on to Part IV, click here.