The Wild Thornberrys - Season 1 - Eps 12: Blood Sisters
With Nigel and Marianne off exploring bat caves, Eliza and Debbie are left at the ""eerie"" residence of colleague Dr. Renfield. Eliza becomes bent on spooking Debbie, but when her imagination gets the best of her the tables are slowly turned. By the time their parents return, the girls are convinced that the absent-minded Renfield is a vampire out to get them!
About The Wild Thornberrys

Title: The Wild Thornberrys
First Air Date: 1998-09-01
Last Air Date: 2004-06-11
Status: Ended
Rating: 6.848/10 (from 260 votes)
Language: EN
Seasons: 6
Total Episodes: 91
Network: Nickelodeon
Genres: Animation, Comedy, Action & Adventure, Kids, Family
Production Companies: Unknown
Synopsis
Travel the world with the Thornberrys and come face-to-face with blue sheep in Nepal, emus in Australia, marmots in Pakistan, flash floods in Siberia, Egyptian burial chambers, a runaway hot air balloon, a rock slide on the Karakoram Highway and more!
Cast

Lacey Chabert
Eliza Thornberry (voice)

Jodi Carlisle
Marianne Thornberry (voice)

Tim Curry
Nigel Thornberry (voice)

Flea
Donnie Thornberry (voice)

Danielle Harris
Debbie Thornberry (voice)

Tom Kane
Darwin (voice)