The Fall of The House of Gryffen - S1.E7

Darius, Starkey and Jorjie spend a very spooky evening at Gryffen’s mansion, as spectres from Gryffen’s past materialise, causing mayhem. K9 sees the "ghosts" for what they really are, and the group have to convince Gryffen before the youngsters' life forces are drained away so that the alien energy beings can take physical form.