Pilot

S1 : E1 | TV-G | 44 min | Aired: 04.07.13

Arthur Milligan and his mother move to Granite Flats, Colorado in the midst of the Cold War.

Empty Box

S1 : E2 | TV-G | 38 min | Aired: 04.07.13

Arthur and his new friends have a covert meeting to discuss theories about the explosion.

A Secret to the Heart Nearest

S1 : E3 | TV-G | 42 min | Aired: 04.14.13

Chief Sanders and the military police investigate Granite Flats, but so do Arthur and his cohorts.

Talking

S1 : E4 | TV-G | 48 min | Aired: 04.21.13

Arthur builds a metal detector to investigate Granite Flats. A reporter asks questions around town.

Bonds

S1 : E5 | TV-G | 45 min | Aired: 04.28.13

Beth investigates Frank's strange behavior and John balances family life with police chief duties.

Reassembly

S1 : E6 | TV-G | 48 min | Aired: 05.05.13

Madeline, Arthur, and Timmy solve the mystery of a missing cat. Chief Sanders makes headway.

The Wrong Man

S1 : E7 | TV-G | 45 min | Aired: 05.12.13

Frank asks for Beth's help to prove his sanity and Hershel receives visitors while incarcerated.

Something Dangerous

S1 : E8 | TV-G | 48 min | Aired: 05.19.13

Chief Sanders attempts to prove Hershel’s innocence. The kids solve another mystery.

Children of Darkness, Children of Light

S2 : E1 | TV-G | 47 min | Aired: 04.06.14

Chief Sanders and Agent Scott investigate citizens. The kids find a coded message.

Boundaries

S2 : E2 | TV-G | 42 min | Aired: 04.13.14

The three sleuths recruit Wallace to get answers. The experiments on Frank at the hospital progress

From Whose Bourn No Traveler Returns

S2 : E3 | TV-G | 44 min | Aired: 04.20.14

Timmy, Arthur, and Madeline make a significant discovery. Chief Sanders pursues Slim.

Also Be the Consolation

S2 : E4 | TV-G | 45 min | Aired: 04.27.14

Chief Sanders wrestles with what he’s done. Regina is grieving and reliving her memories.

Put Away Childish Things

S2 : E5 | TV-G | 56 min | Aired: 05.04.14

The kids get a new English teacher (Christopher Lloyd). A new CIA agent arrives (Cary Elwes).

Cor Unum, Corambis

S2 : E7 | TV-G | 52 min | Aired: 05.18.14

Professor Hargraves (Christopher Lloyd) counsels Timmy. Mr. Ashmeade schemes about Project Mad Man.

Project Madman

S2 : E8 | TV-G | 47 min | Aired: 05.25.14

Beth, Whittison, and the Andrews turn the tables on Ashmeade. Madeline questions her adoption story

Our Rendezvous Is Fitly Appointed

S3 : E1 | TV-G | 60 min | Aired: 10.04.15

Granite Flats mourns the death of a beloved citizen and a new mystery needs to be solved.

The Converging Objects of the Universe Perpetually...

S3 : E2 | TV-G | 50 min | Aired: 10.11.15

Ezekiel gets closer to the identity of The Plumber. Scottie takes a case from an unlikely client.

Mortised in Granite

S3 : E3 | TV-G | 51 min | Aired: 10.18.15

Lieutenant Frank Quincy disappears from the hospital. Aunt Alice has a prophetic dream.

Form and Union and Plan

S3 : E4 | TV-G | 53 min | Aired: 10.25.15

The Andrews try to get answers from Frank Quincy. John enlists his wife's help in the investigation

The Threads That Were Spun Are Gathered

S3 : E5 | TV-G | 55 min | Aired: 11.01.15

The Andrews have Professor Hargraves over for dinner. The kid detectives reunite for a common cause

Some Intricate Purpose

S3 : E6 | TV-G | 50 min | Aired: 11.08.15

Wallace’s mother comes to town and shakes things up. Chief Sanders hypothesizes about The Plumber.

The Terrible Doubt of Appearances

S3 : E7 | TV-G | 54 min | Aired: 11.15.15

Agent Scott questions Professor Hargraves. The kids team up with Mrs. Andrews to solve Frank’s case

All Truths Wait in All Things

S3 : E8 | TV-G | 52 min | Aired: 11.22.15

Doctor Andrews unlocks Lieutenant Quincy’s memories, including the truth about Beth’s fate.