“Parallel Line” is a play about three story lines twisting together, intersecting and crossing to each other. The narrative skill is in a fragmental way, but the three lines of story can be overlapped on one special angle. It can be all tracing back to a murder case at the beginning. And all the roles in the play were already dead, which more like some everlasting revenants. And they are murmuring one after another memory about their experiences, which were full of distress and horror in their lives. And in the darkest purgatory, all the souls are scouring for the last pieces of kindness and love in the catastrophic desperation.