Los Angeles, Aug. 22 -- Actor Matthew Daddario has joined the cast of the 15th season of 'Chicago Fire 15'.

New series regular Da'Vinchi, whose character holds the same rank, teased the casting on Thursday by sharing a behind-the-scenes photo from the set. He posted a picture featuring himself, Daddario, and Brandon Larracuente, who plays Vasquez, seated on Truck 81, accompanied by three fire emojis, as per Deadline.

Chicago Fire follows the professional and personal lives of firefighters, rescuers and paramedics of Firehouse 51 in the Windy City.

The plot of season 15 has not been disclosed yet.

Season 14 ended with plenty of new opportunities for the characters. Former Chief Pascal (Dermott Mulroney), who had been absent since Episo...