Instructions
Go to the university and pick up the corn flour in the kitchen before heading to the library.
Give the four treasures to the man located on the right side of the library; you will have found these in the first act of the game.
Take the golden banana from the man and give it to the librarian. Enter the L-Space portal opened by the librarian.
Go through the portrait and you will be transported back in time. Wait for a thief to steal one of the books. Use the tome on the library shelf to uncover a secret exit.
Go through the exit and follow the thief on the map; he will lead you to the hideout in the left bottom corner of the map.