Malcolm Merlyn (John Barrowman) is back in tow in these new spoiler photos for Arrow season 2, episode 22 "Streets of Fire". Executive Producer Andrew Kreisberg also gave away a spoiler tidbit on his return too!
"All hell is going to break loose in the city and Thea will find herself in a precarious predicament, and she will be saved by her father. And Malcolm is going to offer her what she doesn’t have anymore,” revealed Kreisberg.
Thea will also be headed in a new direction, "That was part of our math with killing Moira — that if we were going to send Thea in that direction, she needed to have nothing pulling her back here". Kreisberg added “Now she has a brother who lied to her and has done something unforgivable, and no mother. And on the flip side, she has Malcolm Merlyn saying, ‘I will never lie to you, Thea.’”
Check out the photos of his return in "Streets of Fire" below: