The Prophet - S2-E21
Continuity mistake: Melinda calls Deliah early in the morning. Her husband just said it was 4:10 and she called her friend who also said it was 4:10. Deliah looks at the clock and confirms the time. But as the camera pulls back, the minutes on the clock are visible, showing 22.
Answer: This "spirit" appears in several episodes throughout the rest of the season including the season finale. He's a "bad spirit" that is intent on keeping souls trapped on Earth. With the death of Andrea (her business partner) he wanted to make a deal with Melinda, to give him HER soul to release everyone else including Andrea to cross over.
Boobra