Thank you for your comments! All of them are really interesting. But please, next time you publish a comment, make sure that you write them correctly. I have seen some mistakes which I cannot accept as a detective.
Here you are, the second activity, you have to decode (to guess the meaning) the following coded message:
- A EMIRC SI NA YTIVITCA HCIHW SI TSNIAGA EHT WAL
It may be helpful to check the Detectives’ Handbook out before doing the 2nd activity! You have some clues there!