When The Organization assigns Junior Spy of the Year, Brett Willis, to go undercover as K.C.'s boyfriend for a mission, K.C. winds up having real feelings for him. Meanwhile, Craig and Kira receive alarming news that their old arch rival Zane is back and determined to destroy them. The Cooper family goes on lockdown. Later in the end of the episode Brett calls his dad who turns out to be Zane.
- 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
- Ross Butler as Brett Willis
- Mays Jackson as Teacher
- Anna Ross as Molly Lopez
- François Chau as Zane Fuller (mentioned)
- Timothy Eulich as Pirate #1
- Nicholas Verdi as Pirate #2
- Randall Archer as Pirate #3
- The working title (for part 1) was, "My Best Friend's Boyfriend".
- The working title (for part 2) was, "The Spy That Like-Liked Me".
- This is the first 3 part episode in the series.
- This is the first one-hour episode.
- This episode marks the first appearance of Brett Willis.
- This episode has the same name as the season 1 finale of The Suite Life on Deck.
- Brett is revealed to be Zane's son at the end of the episode.
- This episode is the first apperance of El Froyo Loco.
- When K.C. was fighting the guys in the theater, it shows their silhouettes on the projection of the movie, but they didn't even fight in front of the projector. And the window was too small to show their whole bodies.
- June 4, 2015 (Canada)
- June 19, 2015 (Italy)
- July 8, 2015 (Part 1; Australia and New Zealand)
- July 15, 2015 (Part 2; Australia and New Zealand)
- August 3, 2015 (Part 1; Latin America and Brazil)
- August 4, 2015 (Part 2; Latin America and Brazil)
- October 6, 2015 (Israel)
- November 28, 2015 (Poland)
- January 15, 2016 (Philippines)
- January 18, 2016 (Turkey)
- January 31, 2016 (Hungary)
| To view the Double Crossed Part 1 gallery, click here.