Lab Rats — Season 4, episode 20 watch online
Lab Rats, season 4 episode 20 «Bionic Island: The Vanishing»: air date February 3, 2016. Episode overview, season trailer and the cast of Lab Rats.
The academy students suddenly vanish after receiving an operating system upgrade. The team initially blames a glitch, but realize the kids are pawns in a much bigger master plan. The Lab Rats put their lives at risk when they face off against the vanished students' captors - a nefarious duo they recognize from their past.
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Episodes — Season 4
- 1 Episode 1 «Bionic Island: Bionic Rebellion» March 18, 2015
- 2 Episode 2 «Bionic Island: Left Behind» March 25, 2015
- 3 Episode 3 «Bionic Island: Under Siege» April 1, 2015
- 4 Episode 4 «Bionic Island: Bionic Dog» April 8, 2015
- 5 Episode 5 «Bionic Island: Mission Mania» April 15, 2015
- 6 Episode 6 «Bionic Island: Simulation Manipulation» April 22, 2015
- 7 Episode 7 «Bionic Island: Forbidden Hero» July 1, 2015
- 8 Episode 8 «Bionic Island: Spider Island» July 8, 2015
- 9 Episode 9 «Bionic Island: Spike vs. Spikette» July 15, 2015
- 10 Episode 10 «Bionic Island: Space Elevator» July 29, 2015
- 11 Episode 11 «Bionic Island: Bionic Action Hero» August 5, 2015
- 12 Episode 12 «Bionic Island: One of Us» August 12, 2015
- 13 Episode 13 «Bionic Island: Bob Zombie» September 30, 2015
- 14 Episode 14 «Bionic Island: Human Eddy» October 14, 2015
- 15 Episode 15 «Bionic Island: The Curse of the Screaming Skull» October 21, 2015
- 16 Episode 16 «Bionic Island: Lab Rats: On the Edge» November 11, 2015
- 17 Episode 17 «Bionic Island: Ultimate Tailgate Challenge» December 2, 2015
- 18 Episode 18 «Bionic Island: And Then There Were Four» January 13, 2016
- 19 Episode 19 «Bionic Island: Space Colony» January 20, 2016
- 20 Episode 20 «Bionic Island: The Vanishing» February 3, 2016