On a visit to the Czech Republic, Jonny and Jessie encounter a ghostly apparition that leads them to an incomplete sonata -- and a generations-old secret.
| Name | Type | Role | |
|---|---|---|---|
| Glenn Leopold | Writer | ||
| Tara Strong | Guest Star | ||
| Don Harvey | Guest Star | ||
| Frank Welker | Guest Star | ||
| Darleen Carr | Guest Star |