The murder of a train yard security guard sends the team and Homeland Security after a mastermind who may be plotting a terrorist attack on a train.
Five-0 assists a Texas Ranger in finding his missing daughter when they cross paths with him during a murder investigation. Adam and Kono run into problems and find themselves fighting for their lives.moreless
Donovan and Nolan ask Martina, an avid and knowledgeable football fan, to help the firm secure a new client. Doug Hartsock, a promising high school quarterback, lost his chance at a pro career due to multiple concussions. His coaches may have ignored his injuries and thus could be culpable in the loss of Doug's career. Meanwhile, a problem in Accounting at Stark & Rowan delays Martina's first paycheck.moreless
Fiona and Michael hunt down the person who they believe sabotaged Michael's last mission. Sam must help his girlfriend's son out of a jam with a dangerous loan shark.
Miami Metro gets closer to Gellar and Travis thanks to the new intern. Meanwhile Dexter deals with faces from the past. Travis tries to move on from Gellar.
Ben treats a patient obsessed with the urban legend of Piggy Man. Meanwhile, Constance brings in a medium to deal with the spirits that haunt her, Vivien begins a new diet, and Violet discovers the truth about Tate.moreless
While the Murder House's newest permanent resident stalks Ben and Vivien, Tate must face someone from his own dark past. Meanwhile, Chad tries to decorate the house to his satisfaction, while Constance has a heart-to-heart chat with Violet.moreless
The final challenge between Dexter and Arthur comes. Debra finds out a long hidden truth. Rita admits that her marriage is troubled. Batista's and LaGuerta's relationship must face consequences.