Kathy Dobson, eight and a half months pregnant, goes missing from a hospital after a check up, unaware that she has preeclampsia, a condition that is left-threatening to both her and her baby. Initially, there are very few clues to the motive for her disappearance, but after some strange behavior from her husband, and speculation by her brother-in-law, the team uncover a very secret 'underground railroad' that helps abused women start new lives away from their partners. Armed with the knowledge that Kathy is hidden somewhere within this network, Vivian goes undercover in a life or death race against time to find the missing woman.
