In 1910, Mrs. Honoria Smythe discovers trunks full of old clothes, letters written in 1810 between two lovers, as well as journals, which tell the tale of a love affair cut short. The young woman is curious about the distinguished soldier in a dusty portrait, which makes her wish to find out more about him and the woman to whom he wrote such romantic letters. She discovers a glorious love story, torn asunder by a duel, and her heart breaks for the lovers from a century past. Her fondest wish is to be able to somehow warn Jeremy Saintaubin and Honoria Danby of what fate is in store for them, well before the damage is done. A fall down the stairs somehow propels her thoughts back a century, into the mind of Honoria Danby. Will the unexplained strange thoughts, the excruciating headaches and the feelings of deja vu, save the day or will she lose the love of her life on a misty morning in Green Park?