| 1: Black and White | 2: Dangerous Depths | 3: Andrej under Suspicion | 13: House Arrest For Othello |
| Uncle Dimitri Stanko Julia Janesh Young Gypsy Old Gypsy |
Julia Ivan Professor Sasha Babbage (potholer/scientist) Perko (potholer/scientist) Marko Marko's sister Uncle Dimitri Stanko |
Julia Andrej Stanko Uncle Dimitri Pepe (Pepe Jola/Joseph Dobritch) Dinko Uncle Dimitri |
Merko (Merko Antolic: geologist) Dr Kozina Julia Uncle Dimitri Stanko Doctor |
Episode 1: Black and White
Uncle Dimitri
Stanko
Julia
Janesh
Young Gypsy
Old Gypsy
Episode 2: Dangerous Depths
Julia
Ivan
Professor Sasha Babbage (potholer/scientist)
Perko (potholer/scientist)
Marko
Marko's sister
Uncle Dimitri
Stanko
Episode 3: Andrej under Suspicion
Julia
Andrej
Stanko
Uncle Dimitri
Pepe (Pepe Jola/Joseph Dobritch)
Dinko
Uncle Dimitri
Episode 13: House Arrest For Othello
Merko (Merko Antolic: geologist)
Dr Kozina
Julia
Uncle Dimitri
Stanko
Doctor