K.C. decides to save Ernie since it was her fault the barbecue failed. They learn the Bishops have planted listening devices and someone called the "The Mask" wants the weapons sold.

K.C., Ernie and ... Meanwhile, Marisa expresses interest in becoming a spy. Unbeknownst to K.C., Marisa is leaking classified information including her latest undercover assignment as a ...

Kamil McFadden and Trinitee Stokes also starred as K.C.’s brother and sister, Ernie and Judy, while Veronica Dunne portrayed K.C.’s bubbly best friend Marisa. For K.C. Undercover’s 10th ...

The newly appointed teen spy takes on her first undercover ... for cheerleading with Marisa so they can spend more time together. Meanwhile, Craig tries to bond with Ernie over sports, but quickly ...

The Coopers go undercover in a biker club to find Richard, the head of The Other Side. Meanwhile, everyone thinks K.C. is losing it when she claims to have seen her evil cousin Abby, the enemy ...