Cold Crystal Mystery is the 12th episode of the 21st season.
When the Heart of Coldness is stolen, Romeo and Greg have to work together to find out who dunnit and why.
The episode begins with Shiver Jack narrating one of his invitations before sending his Snowmugs to give it and the rest to his warm hearted enemies for a party.
- This is the first time Luna Girl disguised herself as Juliet.
- The people Shiverjack invited are Romeo, Juliet, Doctor Undergear, Captain Jake, Izzy, Cubby, Skully, Captain Hook, Mr. Smee, Sharky, Bones, and PJ Masks.
To see the transcript of this episode, click here