After a break in at Queen Consolidated’s Applied Sciences Division, Barry Allen – Central City Police Scientist – arrives in town to assist the investigation where it seems superhuman abilities may be at work. Sin is back too, which is terrific news, though she’s enlisting Roy’s help to track down her missing friend. Moira is free but life certainly isn’t rushing back to normality and simplicity for Mumma Queen. Things also pick up speed on the island as the past and the future mimic one another.
Watch out for a seemingly jealous Oliver, Batman fans rejoice at another name drop and prepare yourself for an epic first part to the mid-season finale.
Don’t miss The Scientist, airing on Sky1 at 8pm on Monday 9 December.