"Ghosts" is the second episode of 'Person of Interest', and it follows in the vein of the pilot in that another case-of-the-week is dealt with. It's again nothing to write home about, and it consumes the majority of this episode, making it one of the weakest of the series. There's plenty of action and plot twists, but the story simply doesn't engage in any way. Thankfully, there's a saving grace to this episode--the flashbacks, which hint at the tapestry this show will weave over the nest 5 seasons.