A locket engraved with the initials L. R. once belonged to Lucy Ripley was given to Duke Crocker in May of 1983, and later given by him to Audrey Parker for her birthday in September of 2010.
In "Over My Head", Dr. Claire Callahan uses this locket to bring back dorment memories of Audrey Parker's time as Lucy Ripley. At first it does not work but eventually Audrey sees flashes when she touches the locket.