Memory Spell: To Fill in the Blanks is a spell written in the Halliwell Book of Shadows that allows the casters to regain lost memories by making them relive the lost time. In 2003, the The Cleaners took Phineas Halliwell Trudeau and erased his existence completely after he conjured a dragon and exposed magic. This resulted in the Charmed Ones losing their memories of Phineas and an entire day. In order to discovered what had happened, Paige Matthews cast the memory spell, which reversed time