After the shocking truth behind Laurel Lance's return from the grave in the trailer for "Arrow" Season 5 episode 10 entitled "Who are you?," a short clip has been released where a conversation between Oliver Queen and John Diggle was teased where they talked about the surprising return of Laurel Lance.

"I can't believe she's back!" Diggle said as he and Oliver are separated by a glass according to Sceen Rant. Diggle also asked about how much this Laurel knows about the events that have happened. "Were using her in," Oliver simply replied but Diggle declined Oliver's plan to let him escape prison once again.

Diggle was first arrested in "Arrow" Season 5 when he was tricked and framed by his superior who was planning to sell a nuclear trigger. Diggle, in his prison cell was hallucinating about Deatshot, Floyd Lawton as his cellmate, with him losing all hopes and guilt of killing his brother made him decide not to fight his case that instantly triggered Oliver and his wife Lyla to help him break out of prison.

John Diggle then picked up his vigilante work as Spartan after his prison break as he becomes incognito from the government and even miss his son's birthday. Will Oliver once more get Diggle out prison? Or will Diggle be fighting for his innocence in the second half of "Arrow" Season 5?

As for the Laurel Lance we've seen in the latest trailer, we all saw what she can do where her supersonic scream can cause a lot of damage without using the high tech necklace that the deceased Black Canary has used before. The only explanation that we all can agree on is that she is the Laurel Lance from Earth 2 that appeared in "The Flash" Season 2 where Barry Allan defeated the Black Siren and imprisoned her in STAR Labs.