Professor Hargraves rebels at his surveillance and is arrested, Whittison tells Dr. Susan that Scottie is a spy, Frank works at finding a way to get his memory back.
Beth, Whittison and the Andrews turn the tables on Ashmead. Timmy and Madeline find out what everyone has been pursuing. Professor Hargraves may not be what he seems.
Regina has a late visitor. John and Hershel confront realities. Timmy and Madeline knock on the wrong door. Wallace learns of his future. Whittison faces his past.
Friendships are tested after a failed class project, Beth investigates Frank's strange behavior, and John struggles to balance his family and his duties as police chief.
Ashmead stirs up confusion and danger when he meddles in the Andrews' personal and professional lives, and Chief Sanders recruits a new deputy with somewhat surprising results.
Alice goes on a date. The Andrews investigate a possible KGB mole. Ezekiel and John get tough. Hershel avoids confrontation. June has an unexpected dinner companion. Things are bumpy for the detectives.
The kids' new English teacher has a way of making Hamlet applicable to life in Granite Flats. Some citizens are unsettled when a CIA agent arrives. And Arthur's detective work reaches a new level.
The Plumber investigation takes a step forward. Madeline makes a new friend. Regina gets a surprise. Trust issues arise for the Andrews. Scottie takes a case. An old secret comes to light.
A new suspect emerges. Susan studies Alice. Frank and Whittison find common ground. The Sanders take a long drive. Wallace gets the shock of his young life.