Rescued by Ruby stars Grant Gustin as Dan, a State Trooper who aspires to join one of the most elite K-9 Units. For the Last Decade, Gustin has been playing The Flash on TV. He even continues to play despite an upcoming film with a different action playing Barry Allen. The 8th Season of The Flash might be the series finale, so he is now transitioning to movies. It will be weird seeing him playing another role, but for sure, it is a relief for him to play another character and star in a movie. It is part of the process of an actor’s growth.