The Hardy Boys: The Hidden Theft Hints

How can I find out the thief's blood type?

  • 1 of 9: The thief's blood type can be discovered by finding an item with a trace of his blood on it.
  • 2 of 9: It may not be apparent at first that the item does have any blood on it. So, focus on finding the thief's items first.
  • 3 of 9: Have you found the hideout?
  • 4 of 9: Once you've found the rag in the hideout, take it and show it to your science advisor.
  • 5 of 9: Iola isn't able to analyze the rag for blood -- she isn't too sure how.
  • 6 of 9: So, let's help her out.
  • 7 of 9: Once she has analyzed the rag, she will tell you that there is indeed blood on it. Very rare blood. AB Negative blood.
  • 8 of 9: She will give you the "Blood Type Evidence", which will appear in your inventory.
  • 9 of 9: Take it, and give it to Con Riley at the crime lab.