This is a set of four knives used by Dexter. For some reason I can't recall which episode they were used in though. I grabbed a screenshot from the episode but can't remember which one it was. Believe it was from Season 3. The set consists of one hero, 2 foam rubber stunts and another knife wrapped in fishing line. The fishing line was used in earlier seasons when Dexter would dispose of any evidence into the sea. In the earlier season this was done physically by actually tossing props into the water and railing them back in. Later on they used a green screen for those boat sequences.
