As the show's family mourns their loss, Melinda begins to do some research on the paranormal with the help of an expert, Professor Rick Payne (Jay Mohr), and gains a new employee in Delia Banks (Camryn Manheim), who has a young son and a dead husband.
This season has a fairly different feel than the first one. For one thing, the spirits that Melinda is dealing with tend to be a lot more active and malevolent. To top it off, not all of her earthbound spirits are going into the light by the end of the episode; many of them are taking the alternate path given to them by the ghost in the black hat.
Where the previous season had only a couple of ghosts that actively tried to hurt Melinda, most of the ones from this season seem to have a grudge against not only the people they already knew in life, but our Ghost Whisperer herself. And while we don't really go a whole lot into Melinda's or Jim's (her husband) past, a lot of that was revealed in the past season and this one focuses more on the new characters (Payne and Banks) and the season's climactic finale. Another difference between the two seasons is that the first one could have almost been watched in any order, but that isn't nearly the case in Ghost Whisperer: The Second Season. While many episodes don't flow directly into the next one, there is a lot more foreshadowing of the events of the season finale, which makes for a much better story arc.
If you enjoyed the first season of Ghost Whisperer, then you will definitely want to pick up this set. If you didn't find yourself too wild about the show, but found the concept interesting or episode plots a bit too predictable, then you might want to give it a second try in The Second Season because it seems like a bit more effort went into the overall story than just the setting up of the Ghost Whisperer universe.
Oh, and a bit of trivia, this season also features a cameo of Cesar Millan, "The Dog Whisperer" himself.