Monk's faithfulness to his deceased wife is put to the test when a murder probe leads him to a beautiful divorcee and a shot at romance.
On her return to Scotland, Mary is stunned by the treacherous world it has become; Elizabeth jeopardizes her standing with an intolerable new suitor; Charles plans to take away Catherine's power.
Michael and Nikita work together to kill a terrorist who murdered Michael's family; Alex tries to cover when she is caught going through medical files.
Michael gives up his position as a field agent and goes back to running operations inside Division; a secret mission takes Nikita into dangerous territory.
FBI agent Audrey Parker tracks a federal prison escapee who mysteriously dies shortly after reaching his hometown of Haven Maine.