Take a look at the hints below for guidance!

    Clue 1

    The fingerprint on the bullet sent through the post can be matched to somebody.

    Clue 2

    Look at the figerprint data sheet from Brisbane City Police.

    Clue 3

    This is quite a distinctive fingerprint – check out the unique markings.

    Answer

    The fingerprint belongs to John Linnsburgh. The print matches the right index finger. This could be a reason to believe that it was John Linnsburgh who killed Trudy!