SpoilerTV Image Archive | Gallery | glee | Season 4 | Promotional Episode Photo | Episode 4.20 - Lights Out | GLEE: Blaine (Darren Criss) does some investigating in the "Lights Out" episode of GLEE airing Thursday, April 25 (9:00-10:00 PM ET/PT) on FOX. ©2013 Fox Broadcasting Co. CR: Eddy Chen/FOX

GLEE: Blaine (Darren Criss) does some investigating in the "Lights Out" episode of GLEE airing Thursday, April 25 (9:00-10:00 PM ET/PT) on FOX. ©2013 Fox Broadcasting Co. CR: Eddy Chen/FOX