Granite Flats

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

Granite Flats is in a panic in the aftermath of the explosion. Arthur and his new friends won't be left out of the action; a covert meeting and a few far-fetched theories have the trio embarking on an investigative journey.

Two investigations into the mysterious happenings in Granite Flats ensue-one by Chief Sanders and the military police and the other by Arthur and his cohorts-and each has varying degrees of success.

Beth tries to connect with her son, Arthur, who has built a metal detector with his friends to help them investigate the mysteries in Granite Flats. A big city reporter begins asking questions around town.

Friendships are tested after a failed class project; Beth investigates Frank's strange behavior and John struggles to balance his family life with his duties as police chief.

Madeline, Arthur, and Timmy seek out new mysteries to solve and Chief Sanders uncovers something huge with the help of some mysterious newcomers.

Frank asks for Beth's help to prove his sanity, Hershel receives visitors while incarcerated, and Arthur and his friends try to salvage their science fair project.

Chief Sanders calls in a favor as he attempts to prove Hershel's innocence and have him released from jail. After the science fair, Arthur, Timmy, and Madeline solve yet another mystery in Granite Flats.