Finch infiltrates a tech corporation to gather intel on an executive whose number has come up; Carter questions Beecher's integrity.
As Sherlock investigates an explosion that killed two people, he uncovers a crime that has been dormant for years; Watson wants Sherlock to choose a sponsor.
Reverend Jamison is struggling with people referring to the departed as heroes. He is faced with death threats and a diminishing attendance at his sermons and then finds out he may lose his church due to foreclosure.
After a U.S. intelligence negotiator goes missing and her ransacked Paris apartment is discovered to be covered in her blood, the team is on the clock to find her before the country's nuclear secrets fall into the wrong hands.
Laurie's resolve is put to the test in the wake of a brutal hate crime. After his latest initiatives to maintain the peace in Mapleton on fall short, Kevin turns down an outside offer to rid the town of its problems. Matt brings his pulpit to the street. Meg takes on a new role.