Seasons & episodes
3 seasons · 24 episodes
Episode 01
Pilot
1962: Granite Flats, Colorado. A quiet, friendly little place...until part of the army base explodes. Is it a Soviet attack or an inside job? Who are the mysterious men in dark suits driving around town? What clandestine work is being done at the local hospital? As three young amateur sleuths and police chief investigate these mysteries, they begin to unravel a complex web of secrets, and Granite Flats will never be the same.
Episode 02
Empty Box
The base explosion causes a Red Scare, and Arthur and his new friends begin investigating those who may have been involved with the explosion.
Episode 03
A Secret to the Heart Nearest
Arthur and his friends Tim and Madeline look into the town's mysteries, and the police chief investigates one man's part in the base explosion.
Episode 04
Talking
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.
Episode 05
Bonds
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.
Episode 06
Reassembly
Arthur and his friends look for more mysteries to solve. John, the police chief, works with the FBI.
Episode 07
The Wrong Man
Frank asks for Beth's help to prove his sanity. Hershel receives visitors while incarcerated.
Episode 08
Something Dangerous
John races to free Hershel from prison, and the kids uncover real danger after the science fair.
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