Cat and Vincent set out to capture Liam; and come across information that could help them do just that. In other events, J.T. and Tess work to confirm that J.T. is serum-free.
A plane filled with dead passengers spurs an investigation in the opener of this series, in which a vampiric virus spreads through New York City.
Corcoran, Morehouse and Doctor Freeman join the national effort and set out to track down Lincoln's killer, John Wilkes Booth. With Donovan dead and the ensuing chaos in New York, Tammany Hall finds an unlikely successor.moreless
A sick airline passenger is taken to the hospital. As Alex performs emergency surgery on the passenger, she believes the patient may be infected with a deadly and contagious virus.
The CIA and FBI both look into the break-in at a high-tech company. In an attempt to discover what was stolen and if it relates to her current assignment, Annie seeks out FBI Agent Rossabi's help. But everything quickly becomes complicated when Simon shows up in D.C.moreless
A crime scene photographer's unusual behavior causes Abby and Lina to investigate the unusual way the model died, while investigating the case unpleasant memories haunt Abby and causes her to remember some stories aher father told about the unpleasant and things he saw.moreless
While Claudia and Myka investigate the case of a woman who can disintegrate anyone who angers her, Pete and his mother deal with their issues after being reunited.
When Erica looks for a new job as an editor's assistant, she finds the editor to be one of her university mates, who joined the "Literati" society back in the days - the most respected club on the campus, that Erica had passed on, which she now regrets having done. Dr. Tom sends her back to her student time to fix that.moreless