4x13 Charmed and Dangerous
First Aired: Feb. 07, 2002 on The WB
Summary: Learning that he is fated to be vanquished by the Charmed Ones, The Source taps into the ultimate power of The Hollow, which consumes all magical power, both good and evil. As he goes after Phoebe, Paige and Piper's powers one by one, the lives of both Leo and Cole hang in the balance.
Guest Stars[no credits found]