Anna Kafka was a talented piano player and composer of Prague, who was betrayed by her partner, Franz Ducek.
Her descendant is Irina Kafka.
200 yeas in the past, Anna was a student of Franz Ducek. Anna was a gifted composer, but female composers were unheard of at the time. When Franz lost his inspiration, he paid Anna to ghostwrite his music for him. Anna eventually wanted recognition for her work and confronted Franz. They fought, and he pushed her down the stairs, causing her death.
In the present, upon hearing her descendant Irina perform her music credited to Franz Ducek, her spirit manifested in the music hall. Jessie and Jonny speak to the president and later get access to the old blueprints. They go looking through the abandoned areas of the building. Anna's spirit manifests again, and reveals her remains, hidden behind a brick wall.
When Franz Ducek's descendant Milos Duncek confronts them, Anna's spirit pulls him into the wall with her body and seals up the brick.
President Alena Stasny later tells Jessie and Jonny that by the time they were able to pull Milos from the wall, that he had lost his mind.
Irina performs Anna's final sonata, and Anna's spirit appears again, this time taking the form she had in life. She sites with Irina and plays with her. Afterward, they tell her that she is getting the credit she deserves and that she's being reburied with full honors. Her spirit leaves.