Mark, Demetri, Gough and MI-6 Agent Fiona Banks look into a Blue Hand club's possible connection to recent suicides. Elsewhere, Aaron gets a surprise visit from a former Army pal of his late daughter.

Mark's romantic getaway with Olivia is cut short when he gets a tip that leads him to the tattooed assassin who appeared in his flashforward. Aaron learns the truth about his daughter's accident.

Mark and his team search for Demetri, while terror suspect Alda promises to give Zoey information on Demetri's whereabouts. Elsewhere, Olivia learns the identity of who sent her the text message about Mark's flashforward.

Olivia receives disturbing news from Gabriel; Aaron's life is in danger as he continues to search for his daughter in Afghanistan.