Trivia / The Flash 2014 S 3 E 19 The Once And Future Flash

• Acting for Two: Grant Gustin plays the eponymous once and future Flashes. The same can be said for Carlos Valdes, Danielle Panabaker, Keiynan Lonsdale, Tom Felton, Tom Cavanagh, and Jesse L. Martin, but their characters' present and future selves never interacted unlike Gustin's.
• Directed by Cast Member: Tom Cavanagh, who also plays the various Wellses, directed this episode.