A woman wearing dark sunglass gunned down Peter Sinclair outside the courthouse, where a Libyan terrorist is due to be tried for the bombing of an airplane over Scotland. The dart that hit Peter contained a deadly connoction that will infect his bloodstream and nerve system resulting in his death within 24 hours. Stone tells Alexander that the trial of the Libyan terrorist and the gunning down of Sinclair is undoubtly related. The team has to find the scientist and have him replicate the antidote before time runs out on Peter.