YouTube today revealed the casting for Lifeline, its new series from Seven Bucks Productions , co-founded by Dwayne Johnson and Dany Garcia, and Studio71, the digital entertainment company and multichannel network of ProSiebenSat.1. Leading the cast as series regulars are Zach Gilford as “Conner Hooks” and Sydney Park as “Norah.” The 8-episode action thriller will be directed by Corridor Digital ‘s Sam Gorski and Niko Pueringer, two of the Internet’s most ambitious Science fiction and action filmmakers.