Lost Files of Sherlock Holmes: Case of the Rose Tattoo Hints

How do I analyse the real formula?

  • 1 of 10: Examine the formula at the lab table.
  • 2 of 10: Holmes will place the "document" on the corner of the lab table.
  • 3 of 10: Taste and smell the document.
  • 4 of 10: Then analyse the document.
  • 5 of 10: Cut a corner from the formula with the scissors.
  • 6 of 10: Add distilled water and ferrous sulfate to the beaker.
  • 7 of 10: Add the piece you cut from the formula.
  • 8 of 10: The "right nitrate" will turn the mixture blue.
  • 9 of 10: Use iron nitrate on the beaker.
  • 10 of 10: The formula will return to your inventory afterwards.