Knightsquire is basically a remake of buloght's earlier one room adventure, with new backgrounds and a complete quest involving the rescue of the king's daughter.

Clicking on the portraits allow you to swap between two characters, since certain actions can only be attempted by either the squire or the knight. Items can be passed around to each other by simply selecting an object, then choosing the recipient. Use the left mouse button to interact and press the right mouse button to examine your surroundings.

Hints can be found in this forum thread.

Name: Knightsquire
Developer: buloght
Category: Adventure
Type: Freeware
Size: 1MB