A devilishly handsome detective from Scotland Yard, Colin Hunt, teams up with Castle and Beckett to find the person responsible of his friend's daughter. Meanwhile, Lanie convinces Beckett she needs to make a move on Castle before it's too late.
"When a bomb kills five people at a protest rally, Beckett and Castle try to solve the case by reconstructing the 47 seconds prior to the explosion. Using video and witness accounts, they uncover the shocking truth about who planted the bomb."
