The Secret Serum Scooby-Doo! Mystery Incorporated : Season 1 Episode 11
TV-Y7-FV Cartoon Network 23m int(0)
Aired: October 11th, 2010 @ 5:00 PM EST on Cartoon Network
There's a vampire loose in Crystal Cove, terrorizing the residents and stealing an odd assortment of loot. When the gang does some sniffing around, they discover an unlikely suspect… Daphne's MOTHER. Things are already strained within Mystery Inc., and with this latest blow, the gang is truly torn in half. Girls on one side, boys on the other.