"The Flash" TV series spoilers coming from cast Grant Gustin himself, who hinted of an "Arrow" crossover when the "fastest man on earth" comes to the boob tube. Meanwhile, "Law & Order" star Jesse L. Martin joins the show where he plays another detective role.

When asked by TV Fanatic about love interests and "Arrow" crossovers, Grant Gustin dished out some "The Flash" TV series spoilers.

"I don't really know where the love parts are going but I've been told there will be crossovers from both shows," he said. "They're setting it up to definitely play with it."

As to whether the show will move forward, he said: "I feel confident about the show going far even before I got the part, just as a fan because everybody wants to see this because it's long overdue."

He also said that he's doing most of the stunts on the show, except for the "insane stunts" and in that case, he's got the stunt doubles for that.

"Barry is not the only one with powers on the show. There will be powers on The Flash, it will be a regular thing," he said.

Meanwhile, the extended trailer of the show also revealed "The Flash" TV series spoilers such as "Law & Order's" Jesse L. Martin playing Detective Joe West.

According to the Dean of Geeks, Det. Joe West is "an honest, blue-collar cop who is a surrogate father to Barry. A soulful, funny and caring father to Iris -- Barry's potential love interest -- West came up through the foster care system and took Barry in after his mother's slaying and father's imprisonment. He believes in Barry and supports his efforts to prove his father's innocence"

"The Flash" TV series tells the story of Barry Allen, who works as with the police department and gains powers after an unexpected accident. The series is expected to air on CW in the fall.