第 3 季 共 25 集
播出时间：2017年7月8日
第 1 集 Coopers on the Run
播出时间：2017年7月8日
K.C. and her family of spies, along with her BFF Marisa, are on the run from archenemy Zane in Rio de Janeiro when they must take on another spy like non before – the fierce and slightly bizarre enemy agent Sheena.
第 2 集 Welcome to the Jungle
播出时间：2017年7月15日
K.C., Ernie and Marisa are on the run from Zane and eccentric enemy agent Sheena in the heart of the Brazilian jungle.
第 3 集 Out of the Water and Into the Fire
播出时间：2017年7月15日
When Zane sabotages the Coopers' plane ride, it is up to K.C. to save herself and her family.
第 4 集 Web of Lies
播出时间：2017年7月29日
K.C. is surprised by the results of her SAT score and believes someone tampered with her test. Meanwhile, Marisa expresses interest in becoming a spy.
第 5 集 Teen Drama
播出时间：2017年8月5日
K.C. struggles to make amends with Marisa after their fight, while Marisa wants a recommendation for The Organization from K.C.
第 6 集 K.C. Under Construction
播出时间：2017年8月12日
Unbeknownst to K.C., Marisa is leaking classified information including her latest undercover assignment as a construction worker. Meanwhile, Judy’s disagreement with Diane over the tooth fairy jeopardizes the sophisticated robot’s disguise as an everyday 10-year-old.
第 7 集 The Storm Maker
播出时间：2017年8月19日
K.C. is tasked with tracking down a dangerous weather-controlling device on the same night as her homecoming dance.
第 8 集 Keep On Truckin'
播出时间：2017年8月26日
K.C. lies about losing the weather machine, and sets up her own mission to get it back.
第 9 集 Unmasking the Enemy
播出时间：2017年11月4日
K.C. sets a trap to reveal Brady's secret identity.
第 10 集 The Truth Will Set You Free
播出时间：2017年11月11日
When K.C. tells her family and The Organization that Brady is an enemy spy with The Alternate, the Coopers secretly work with Marisa to set a new plan in motion to catch him.
第 11 集 Stormy Weather
播出时间：2017年11月18日
Ernie and Marisa team up to help K.C. stop Brady and The Alternate from launching The Storm Maker.
第 12 集 Deleted!
播出时间：2017年11月25日
When Judy is due for an upgrade, the Coopers reminisce about their great times before they have to delete her memories and return her to the Organization.
第 13 集 Second Chances
播出时间：2018年1月16日
K.C. realizes she misses Darien and goes to tell him, but he reveals he has a new girlfriend. K.C. lies and says she has a boyfriend and the two agree to go on a double date.
第 14 集 Revenge of the Van People
播出时间：2018年1月17日
Ernie hosts a group of young international agents while KC is away on a mission.
第 15 集 The Gammy Files
播出时间：2018年1月18日
The Coopers prepare for Poppa Earl to visit with his new fiancé, Betty. He surprises everyone with how happy he is, but K.C. recognizes Betty from an unsolved case from 1977.
第 16 集 Take Me Out
播出时间：2018年1月19日
K.C. is tired of being just friends with Darien.
第 17 集 Twin It to Win It
播出时间：2018年1月23日
K.C. is assigned to protect a foreign diplomat at a university ceremony and must go undercover by joining the school's drumline to secure a key position next to the diplomat.
第 18 集 Cassandra Undercover
播出时间：2018年1月24日
Byron waits for K.C. to respond and she says she's not K.C.. but her cousin, Cassandra. Byron suggests they all go to dinner, so K.C. breaks Bernice out of jail to play her cousin.
第 19 集 K.C. Times Three
播出时间：2018年1月25日
The team strategizes on ways to find Bernice.
第 20 集 The Domino Effect
播出时间：2018年1月30日
The Coopers track down agents who are distributing weapons to enemy agencies, only to discover they are parents of K.C.'s classmate Amy.
第 21 集 Domino 2: Barbecued
播出时间：2018年1月31日
As K.C. continues to get closer with Amy, she plants bugs in the Bishops' house to get information on the weapon-distribution list.
第 22 集 Domino 3: Buggin' Out
播出时间：2018年2月1日
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.
第 23 集 Domino 4: The Mask
播出时间：2018年2月2日
K.C. and Marisa take Amy on a trip to New York so she won't be at home to witness her "parents" being arrested by the Organization.
第 24 集 K.C. Undercover: The Final Chapter
播出时间：2018年2月3日
K.C. struggles to decide if she should continue as a full time spy or live a normal life at college.
第 25 集 K.C. Undercover: The Final Chapter
播出时间：2018年2月3日
K.C. struggles to decide if she should continue as a full time spy or live a normal life at college.
