Detective John is back in Oakville, this time to investigate a series of strange occurrences at the haunted mansion. With the help of a new ally, Dr. Rachel Parker, a scientist who specializes in paranormal activity, Detective John sets out to unravel the truth behind the haunted mansion's latest activity.
As they delve deeper into their investigation, Detective John and Dr. Parker uncover a shocking truth. The ghostly figure from the previous case was not seeking revenge, but was trying to protect the mansion from a dangerous group of thieves who were seeking a powerful scientific artifact hidden within the mansion. The artifact was said to have the power to control time and space, and the thieves will stop at nothing to get their hands on it.
With the help of a local historian, Detective John and Dr. Parker piece together the history of the mansion and the artifact, and they find themselves in a race against time to stop the thieves and protect the mansion. They decipher the clues left behind by the ghostly figure, but their progress is slowed by the dangerous traps and puzzles set up to protect the artifact. With the thieves hot on their trail, the pressure is on for Detective John and Dr. Parker to solve the mystery and protect the mansion.
At one point, they find themselves in a deadly game of cat and mouse with the thieves as they navigate a maze-like network of secret passages within the mansion. Detective John's quick thinking and Dr. Parker's scientific knowledge are put to the test as they use their wits to evade the thieves and find the artifact before it falls into the wrong hands.
As they near the end of their journey, the ghostly figure appears, determined to protect the artifact. Detective John and Dr. Parker are forced to confront the figure in a final showdown, using everything they have learned in their investigation to defeat the powerful spirit.
In a final showdown, Detective John and Dr. Parker face off against the thieves and the ghostly figure. Just as they think they have succeeded, they realize that the ghostly figure has one more surprise in store for them.