Brett is back and his assignment is to eliminate K.C.! But when he can't bring himself to complete his mission, K.C. decides to help protect him from The Other Side. However, she must keep him away from The Organization, lest her family get locked up for harboring a fugitive.
- Zendaya as K.C. Cooper
- Veronica Dunne as Marisa Miller
- Kamil McFadden as Ernie Cooper
- Trinitee Stokes as Judy Cooper
- Tammy Townsend as Kira Cooper
- Kadeem Hardison as Craig Cooper
- Sherri Shepherd as Agent Beverly
- Ross Butler as Brett Willis
- Roz Ryan as Gayle King
- Lee Reherman as Victor
- Cait Fairbanks as Ursula Timmcoy
- The working title was, "No Going Back, Part 1".
- This is the first appearance of Ursula Timmcoy.
- This is the first part of the two-part season finale.
- This is the first episode to air in 2016.
- This episode marks the first time K.C.'s room is seen.
- K.C. breaks the fourth wall near the end of the episode, when she faces the camera and tells the viewers "Kids don't do this at home."
- This episode hit 2.5 million viewers.
- This is the final appearance of Victor, he is supposed to appear in other episodes but unfortunately Lee Reherman died on February 29, 2016.
- The credits played way too early before the end.
- February 23, 2016 (Israel)
- February 26, 2016 (Latin America, Brazil)
- March 28, 2016 (UK and Ireland)
- April 22, 2016 (Spain, Portugal)
- May 20, 2016 (Philippines)
- September 5, 2016 (Hungary)
| To view the K.C. and Brett: The Final Chapter - Part 1 gallery, click here.