Griffin, Savannah and Harper find themselves face to face with Harper’s carbon copy, Daisy, and the Tremont ghost sends Harper and Griffin an important message.

Harper pretends to be Daisy to learn her family’s secrets, and Topher stumbles upon the hidden bunker.

Griffin frantically searches for the missing crystal and helps a panicking Daisy to navigate her modern surroundings; meanwhile, Harper has a cryptic vision at the springs.

When Daisy struggles at pretending to be Harper, Griffin searches for the crystal to swap them. After the Twins don't hear from Topher, they try to capture the ghost themselves.

When Sam can't get his Time Machine to work, Savannah vows to help him! Meanwhile, Griffin tells Daisy that he thinks Topher is hiding something and enlists her to find answers.

The Tremonts were duped by the Judge and have 48 hours to vacate their land. Meanwhile, when Griffin and Daisy rush towards the portal with the crystal, everything goes black!

Harper returns home and fills Griffin in on the deed, stolen land, and her visions of a fire. After Sam disappears, Savannah finds a note saying that he’s travelled to the future.

The Campbell's and the Dunn's prepare for the Tremont’s Grand Re-opening! Harper and Griffin realize that the crystal is cracking which may prevent the Time Machine from working.

Griffin, stuck in the future, learns the ghost ruins their lives. Harper and Savannah try bringing him back to the present.

Harper and Savannah retrieve Griffin from the future. Sam and Griffin face the grimmest truth, Topher is in a coma in 2024. The twins and Topher almost catch Savannah’s “ghost.”

The twins arrive in the past and find Savannah. Griffin and Harper realize they need to go back to 1947 just as Ben makes the bunker off-limits.

The kids learn the ghost has been listening to them and is changing up his malevolent plans.

In 1947, Harper and Griffin meet Ruby. Sarah becomes increasingly freaked out by the ghost.

Returning to the past, Griffin and Harper watch a murder unfold. The twins and Topher go to an unknowingly familiar someone for help.

It’s time to get rid of the ghost.

The ghost will go, but will their future be saved?