Wednesday is visited by her Uncle Fester , who helps her identify the monster terrorizing Jericho as a "Hyde."
In this episode, Wednesday Addams continues her investigation into the Hyde monster while dealing with the arrival of a beloved family member.
Fester assists Wednesday in breaking into the Nightshades' hidden library to find the "Nathaniel Faulkner" diary, which explains the nature of Hydes—creatures that stay dormant until "unlocked" by a master.