to wake him up but fails, so Mackenzie touches the body and discovers that it's only a doll. She also finds a hole in it and uses the wind-up key that she found inside the mansion. The doll wakes up and introduces himself as Silver. He says he doesn't know why he can talk and thinks he has a problem as cannot sing anymore. He mentions a girl who always listened to his songs but when she moved closer to the window, there was a flash and he never saw her again nor can he sing anymore. Mackenzie decides to help Silver and find the girl. She makes her own ghost detector and find a ghost named Colleen. She figures out that Colleen is the same mysterious girl that Silver mentions so she tells her about him. However, Colleen gets scared and runs away. Mackenzie goes back to the greenhouse and asks Silver to sing again to guide Colleen to him. The Cornstalker appears, planning to steal Silver but decides not since his singing is bad. Silver feels very sad about this insult. Mackenzie finds Colleen outside the greenhouse. She convinces her to apologize to him and she does. Silver sings again but suddenly, Spooky the cat scares Colleen. she goes through the window with a big flash and disappeared. Surprisingly, Silver can sing normally again. As she leaves the building, Mackenzie realizes that Colleen is still there beside Silver through the silver window. Episode 5 - Invasion, a vendetta of afar Chloe and Penelope tells Mackenzie that they found a raffle voucher for some Mongolian beef. The three of them decide to search for more tickets. While doing so, Mackenzie finally receives her ID card from The Great Detective's Society. After collecting all five raffles, Mackenzie is also given a VIP pass to the exhibition and invites Cromwell An artifact is stolen by the Cornstalker, so Mackenzie and her friends track him down inside a pink elephant structure. He tries to escape, but a spaceship appears and takes the whole room along with everyone inside. Mackenzie then wakes up to find herself alone. She soon discovers that the Seabottom Dwellers are actually the servants of aliens who plan to vaporize all of the cows on Earth. After Mackenzie frees everyone, she plants Cromwell's time bomb. They escape and foil the aliens' plans. In the end, they go home and