Season 4 Episode 9 - Pieces of You
Melinda continues trying to reconnect with Jim who has inhabited Sam’s body. She fears she may have gotten him haunted after he makes a wish at a wishing well, which is answered by a creepy young female ghost. Unsure how the ghost died in the well, or why she was answering people wishes, Melinda and Eli begin their sleuthing, initially working under the assumption that the girl, Gretchen, was murdered, possibly by her own brother. However, they soon discover that simple sibling rivalry was responsible for Gretchen’s death. Escalating pranks between Gretchen and her brother had led her to make a wish at the well that he get his arm chopped off, and he discovered this wish. He set up a prank where it appeared that he had lost his arm, and racked with guilt, Gretchen had returned to the well to take back her wish, only to fall to her death. Not realizing it was a prank and still feeling guilty, she had then spent years in the well answering people’s wishes. Once Melinda helps her reconnect with her brother she is able to find peace and cross over, but not before granting Sam’s wish. He had wished that he could have a clue to who he was in his forgotten life, and Gretchen helps him discover that he had recently purchased an engagement ring for an unknown recipient.
Season 4 Episode 10 - Ball and Chain
Melinda encounters the ghost of a bipolar woman, Tammy, who it's assumed had run out on her husband, Roger, and who had been missing for two years. Melinda and Eli work under the theory that Tammy's mental condition had contributed to her rash decision to leave Roger, and after help from a vision they find Tammy's dead body in her car, where it appears that she committed suicide. This leads to the discovery that Tammy had not only run out on Roger, who had remarried, but also on her previous husband, Thomas, and their two boys. Tammy tries to help Melinda figure out exactly what led her to this end, but she struggles to remember anything about her life. However, after Melinda notices bruises on Tammy's wrists it all comes flooding back. Roger had kidnapped and brainwashed Tammy, eventually convincing her that she was his wife and that she loved him. When he felt he was starting to lose control over her he decided he had to kill her, so he drugged her and staged the suicide to cover his tracks, and then he repeated his crime by kidnapping his current "wife." Melinda is able to rescue this latest victim and reunite her with her family, and she helps Tammy reconnect with Thomas and her sons before crossing over.