The announcement most likely comes after strong Twitter support for Ryan's return. Story by Matt Cummings Is it possible that the Internet is once in awhile a force for good? When NBC pulled the plug last season on its rookie effort Constantine , there was an almost instant cry from fans: get him into another DC show as soon as possible. The problem was where would he land and for how long would he be around. Both questions were answered on Tuesday at the Television Critics Association summer press tour, when it was announced that Actor Matt Ryan would reprise his role as John Constantine in one episode of season four of The CW's Arrow . Executive Producer Marc Guggenheim more than likely is now a fanboy fave when he said the following about Ryan's return: "We are thrilled to have Matt Ryan reprise the role of John Constantine on an upcoming episode of Arrow," said. "Matt is an incredibly talented actor and his portrayal of this beloved ch...