The Pirates Of Dark Water - S202 - A Drop Of Darkness

While running from Bloth, the crew rescues an old woman named Cray who knew Ren's Father Primus and is an alchemist. She saves them, but offers anything for a sample of Dark Water to use in a potion of hers, but Ren refuses. She then uses one of her potions on Tula to force Ren to do her bidding and uses the Dark Water in a potion to make herself young again in an attempt to reclaim her youth.