Sydney uncovers a terrifying secret when she's sent on a mission to track down a new generation of weapons, and Vaughn worries that Jack might be setting up Sydney's mother to take a fall.
Jack makes a great sacrifice in order to regain his daughter's fading trust. Sydney and Vaughn may have been exposed to a deadly virus in Taiwan, and Sloane begins to unravel.
Jack and the team look for a paparazzo after he vanishes from a celebrity shoot, and his camera is found covered in blood.
