Note: Some spoilers follow for tonight's Arrow , "A Matter of Trust," though nothing not previously revealed officially by the network and studio via the guest credits already released for the episode.

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Michael Rowe as Deadshot in Arrow.

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This week's Arrow, "A Matter of Trust," features an interesting guest star in the form of Michael Rowe, who reprises his role as Floyd Lawton, AKA Deadshot. Deadshot's appearance is notable, of course, because the character died a couple of years back on the show - but also because this marks Deadshot's first appearance on Arrow since the Suicde Squad movie opened this summer, in which Will Smith played Deadshot.I saw "A Matter of Trust" at a screening for press this week and while I won't divulge details on Deadshot's role in the episode, I will say it's signifiant and more than a one-scene cameo. When the character was killed off -- and Amanda Waller soon after -- more than one Arrow participant said that there was a mandate from above at DC and Warner Bros. for the series to curtail their use of any of the Suicide Squad characters , as the movie approached, even though many had been already introduced on the series.After the screening, during a Q&A with Arrow executive producer Marc Guggenheim, I asked him if he could elaborate on what the restrictions (or lack thereof) the series currently has in regards to those characters.Said Guggenheim, "It's always a case by case thing, so I never like talking about like, ‘Oh, this is what we can do going into the future.’ I don't know what the future holds because I haven't approached that case by case situation."However, when it came to "A Matter of Trust," Guggenheim remarked, "In this case, it was really simple. I went into the writer's room, this was a pitch on the table, I shot an email off to Geoff Johns. I got a response back, and Deadshot's in the episode!"Guggenheim wouldn't elaborate on whether that meant we might see more appearances from Suicide Squad characters in the future on the series, but it certainly didn't sound like it was impossible - and DC/WB recently okaying the introduction of Superman on Supergirl seems to indicate that perhaps they are loosening up a bit in regards to letting more characters simultaneously appear in different incarnations in film and TV, as we approach the time where their Flash movie will be in theaters while, presumably, The Flash series is still on the air.Arrow: "A Matter of Trust" airs Wednesday, October 19th at 8:00pm ET/PT on the CW.

Eric Goldman is Executive Editor of IGN TV. You can follow him on Twitter at @TheEricGoldman , IGN at ericgoldman-ign and Facebook at Facebook.com/TheEricGoldman