- Thomas Jansen as Daniel Hunter
- Stony Blyden as Max Hunter
- MaeMae Renfrow as Tess Hunter
- Daan Creyghton as Sal Hunter
- Kyra Smith as Anika Hunter
- Yootha Wong-Loi-Sing as Simone
- Ronald Top as Erik Hunter
- Tooske Ragas as Kate Hunter
- Zoë Harding as Sophie Saganash (uncredited)
- Cees Geel as Mr. Bruhl
- Liora Kats as Janine Bruhl
- Amedeo Feingold as Julius Bruhl
- Dawn Mastin as Gertrude
- This episode shows Mr. Bruhl's house as Anika goes through it to find out exactly what he wants with the Hunter house. As well as showing his connection with Saganash. It also features an appearance from the Hunter kids' parents, Kate and Erik . They travel to Indonesia to the Java Sea to retrieve the red diamond, which they do. It features the first appearance of Sophie, Saganash's daughter, who is trapped after she is caught trying to steal something from the Hunter house after she broke in using the tunnels.
- All the Hunters find out about the connections of Mr. Bruhl to Saganash in this episode.
- This episode marks the first appearance of Sophie.
- Anika pictured an architectural blueprint that shows an image where Bruhl wants to buy the Hunters' house.
| To view the Undercover gallery, click here.
Community content is available under CC-BY-SA unless otherwise noted.