The Book of Untying Knots is an item found in Freddi Fish 2: The Case of the Haunted Schoolhouse.
Freddi Fish 2: The Case of the Haunted SchoolhouseEdit
Freddi and Luther will need this book if they need to get rope for their trap. The duo can find the book in the sitting room in the basement (which is the room above the room where the cork would be). After the tied up rope of Captain Schnitzel's anchor is clicked on, the book will then need to be brought out so that Freddi and Luther can find which knot matches the rope's knot. The instructions to untie the knot must then be followed in order to untie the rope. Once that's done, the book will be replaced with the newly obtained rope.