When the sole witness against the son of a powerful mob boss goes missing in the woods, it's up to Mark, Rex and Jesse to track him down. The mob boss has already hired an assassin to find the witness.

When businessman Jake Kaufman is found dead on his yacht, all suspicion falls onto a deckhand who ran from the scene. As Mark and Rex search for motives and clues, it seems that the businessman's missing watch might be what the killer was after… But with Rex being unable to find traces of the watch on any of the suspects, the hunt for the elusive watch and the killer becomes a race against time to save another life.