To avoid spoiling anything, below are photos from the fifth episode of The Flash Season 4, which includes guest star Katee Sackhoff. This episode doesn't air until November 7th, meaning we still have this week's episode to go, as well. More on all of that and the photos below.
In the photos below from the episode Girls Night Out, we know that this is the bachelor/bachelorette parties for Barry Allen (Grant Gustin) and Iris West (Candice Patton). We also know that Felicity Smoak (Emily Bett Rickards) is guest starring, as well as Katee Sackhoff (Battlestar Galactica).
The images confirm that Caitlin Snow (Danielle Panabaker) becomes Killer Frost again and we see Cisco Ramon (Carlos Valdes) sitting in prison next to Ralph Dibny (Hartley Sawyer)… so the Elongated Man sticks around after this week's introduction. And we get to see Norvok (Mark Sweatman) again as he appears with Sackhoff in her roles as Amunet, AKA the Blacksmith.
Has quietly been working at Bleeding Cool for over three years. He has written comics for Image, Top Cow, Shadowline, Avatar, IDW, Dynamite, Moonstone, Humanoids and Zenescope. He is the author of the Lucius Fogg series of novels and a published photographer.