Arrow Season 3 Spoilers: Colin Donnell Returning Again as Tommy Merlyn

Colin Donnell returned to Arrow earlier in Season 3 in a flashback to Oliver's time in Hong Kong. The character died in the Season 1 finale but the structure of the show allowed him to return briefly this season, and he's coming back yet again.

E! Online first exclusively reported that Donnell would return. The site spoke to executive producer Marc Guggenheim, who revealed the news.

"When we saw Tommy return earlier this season-in a flashback-I absolutely loved seeing him back on the show! Is there any chance we'll be able to see him later on this season again?
Marc Guggenheim: We love Colin Donnell and we love having him on the show. I was on set for his scene at the end of season one and the second we wrapped him, I said to him, 'I'm so glad we do flashbacks on this show!' So yes, you have not seen the last of Tommy Merlyn.

Amazing!
Though I will say this, the next time you see Tommy Merlyn, you will see him again on the show but it won't be the way you're expecting."

Tonight's all-new episode will focus on Roy's dreams about killing Sara. Guggenheim offered a bit of a preview of what to expect.

"The final scene of last week's episode pretty much gave me a heart attack. What can you tease or reveal about why Roy (Colton Haynes) is dreaming about murdering Sara (Caity Lotz)?
Well, I can't reveal anything! You know me. But I can certainly tease that as Felicity [Emily Bett Rickards] will say in the episode, memories are often resurfaced in dreams. What you saw may not actually be a dream at all but rather a memory of something that happened."

What do you think of the news that Tommy is returning? How will he come back? Let us know in the comments section.