Continuity mistake: When Melinda is talking to Kyle, her mole moves around several times.
Continuity mistake: While Melinda is driving to New England, her car switches from being a Jeep Cherokee to an Isuzu and back again.
The Walk-in - S2-E17
Continuity mistake: When Jim brings a new body to the morgue there's a "John Doe" already lying there, and in the close up we see that the corpse's right foot is missing the middle toe. We see this again later when Jim's ring is stolen from his locker, with the bloody right footprint on the floor. However, when Melinda shows up the close-up shots of the bloody footprints have been flipped so it's the left foot with the missing toe, but what's funny is that in the audio we hear Jim say, "The middle toe is missing on the right foot."
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.
Continuity mistake: When Melinda is walking to Andrea's apartment and is stopped by a news crew for an interview, she gives her interview and says "We're going to be okay" at the end of it. In the scene in Seattle where someone that knows her sees her interview on TV, her interview is different in that her manner is completely different and happier and she says "we'll be okay" at the end instead.
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