Appendix iii: The Thief is the third level in Forgotten Shores.
At the start of the level, Ida uses a crow to turn a platform and access a door. When she is walking towards the door, the platform suddenly moves back, sending the crow and Ida flying into the next area. When the area is reached, Ida is missing her hat, which is being worn by the crow. Ida and the hatted crow have to make it through several areas, in order for Ida to get her hat back and return a peice of sacred geometry.