"Undercover Shmoo" is the second segment of the first episode of the second season and the seventy-ninth overall segment of the twelfth overall episode of The Flintstone Comedy Show (known as Flintstone Frolics), a spin-off of the original series, The Flintstones. It aired on September 12, 1981.
Fred and Barney go undercover, infiltrating the "Hole in the Head" gang to acquire evidence against them. To prove their loyalty, the gang orders the two policemen to steal the priceless Crystal Caveman.
- Fred Flintstone
- Barney Rubble
- Sergeant Boulder
- Butch Cavity (only appearance)
- Sunrock Kid (only appearance)
- Bedrock Police Station
- Bedrock Art Museum
- Crystal Caveman (only appearance)
- Suction cups (only appearance)
- Tyrannosaurus (as a skeleton)
- Saber-Toothed Cat
- Stegosaurus (as burglar alarms)
|Henry Corden||Fred Flintstone|
|Mel Blanc||Barney Rubble|
|Lennie Weinrib||Sergeant Boulder|
- The Crystal Caveman was shaped from the character, Captain Caveman.