Oz goes to Rack and gets him to change his shape to that of Tara. He then abducts her and keeps her tied up somewhere (nothing too nasty) and tries to take Tara's place. However the spell does not give him Tara's memories or behaviour and before more then kisses happen Willow is quickly aware that something is wrong. She uncovers his true shape and uses a location spell to find where the true Tara is hidden.
Any good as a Pens fic? It's great that this forum is here so that I can post ideas and any that would cause offense can be filtered out at the planning stage.
Thomas.


