TV Article Dark Matter: Wil Wheaton stars in exclusive clip for the penultimate episode of season 1 See an exclusive sneak peek at Wil Wheaton's appearance on the Syfy series By Megan Daley Published on August 24, 2015 12:15PM EDT Photo: Russ Martin/Prodigy Pictures/Syfy Things are looking a little bleak for the crew on Dark Matter. In this exclusive clip, a straightforward mission to rescue a scientist being held hostage takes a turn when the group is ambushed by a man (Wil Wheaton) with a connection to one of their own. He’s willing to do just about anything to get what he wants, and One believes Tabor is behind all of this. What kind of danger is ahead for our team? Dark Matter will air back-to-back episodes beginning on Fri., Aug. 28, at 9 p.m. ET, with the finale set to air at 10 p.m. ET on Syfy. Russ Martin/Prodigy Pictures/Syfy •Dark Matter cast teases Ruby Rose’s guest appearance •What’s up next for OITNB’s Ruby Rose? •Syfy orders ‘Dark Matter’ graphic novel adaptation to series