Lab Rats· Season 4 · Episode 18Bionic Island: And Then There Were FourS04E18·January 13, 2016·30m·Disney XDEveryone is shocked when Douglas introduces a fourth bionic sibling named Daniel who's been living a normal life with an adopted family.Streaming on (US) See allShareGuest starsPearce Jozaas Daniel DavenportCrewVictor GonzalezDirectorKKen BlanksteinWriterPreviousBionic Island: Ultimate Tailgate ChallengeS04E17 · 7.0NextBionic Island: Space ColonyS04E19 · 9.5Keep going