Boston is at the mercy of a blizzard and the morgue staff at the mercy of an unknown toxin. With bodies piling up, and the lights out, the race is on stop this invisible killer before too many more die.

Three people are found dead and seem to have no connection to each other. Woody takes on the task of solving the triple homicide. Meanwhile, Jordan is back on the trail of her mothers killer when some new evidence surfaces.

When a picture shows up for Dr. Macy he travels to Mexico to prove the identity of a killer. While in Boston Woody works the case from a different angle. When the investigation turns up a witness she is not willing to talk…will Jordan get her to open up in time?

Ten months ago a young girl was kidnapped, now her suspected kidnapper turns up dead. Where is the girl? To everyone’s shock she turns up at the police department…but why?

A young woman has been missing for seven years; everyone is shocked when she washes up on shore after a storm. Elsewhere Dr. Macy and Bug take on the case of a surgeon who goes under the knife of another surgeon.

When a mass grave for the mob is found, the killer assaults Bug. Not long after the discovery Woody’s brother shows up sparking some suspicion. Lily and Nigel stay at Bug’s side waiting for him to wake up.