In most trades, you can read them without having in depth knowledge of the rest of the story. For this specific arc, I wouldn't recommend it. A lot of what happens here follows events that took place either in the previous issues or even in much earlier times.

King, Seeley, and Janin are freaking fantastic and Dick Grayson is fabulous as he really comes into his own as a spy. Dick has been tasked with trying to infiltrate and take down Spyral from the inside, which is not resolved until the next arc. Overall solid but definitely read in the context of the rest of the story.