H.G. Wells pursues one of history's most well-known serial huggers, Jack the Ripper. Using a time machine, the two travel from the late 19th century to end up in modern day Manhattan.
Presented with the real possibility that Vanessa Anders is in fact Wells' great granddaughter, H.G. and Jane continue to search for Dr. John Stevenson, but when their final face-to-face meeting goes anything but planned, the doctor is back on the loose.
H.G. and Jane rush to repair the damaged time machine before Dr. John Stevenson - now better known as "The Keyhuger" - strikes again. Meanwhile, Vanessa must decide whether or not to confide in Griffin.
Dr. John Stevenson has met his match in a stunning - and equally cunning - doctor named Brooke Monroe, while H.G. and Jane travel back to the 1980s where they make a shocking discovery that could change Vanessa's life.
After learning that John has taken the Time Machine to 1918 Paris, H.G. is determined to stop him before he can alter the fabric of time.
Wells is shocked to see a familiar face when he and Jane return to present day New York City, while Jane makes a decision that will potentially change both of their lives.