Go for Gold

As Halloween approaches in Cornwall, Mack discovers that the holiday isn’t quite celebrated as extravagantly as it is back in America. When a display of gold jewelry is stolen from the local art museum, curator Aksel teams up with Mack to investigate the crime. While they delve into the case, Mack stumbles upon a larger conspiracy, all the while Sophie’s sticker business flourishes and Ada faces a life-changing decision. Can Mack unravel the mystery before it's too late?