Comic-Con 2017: 10 Major TV Reveals You Need To Know
8. Caitlin Is Back On Team Flash, Barry's Return Teased - The Flash
Earth-1 Caitlin Snow made the full transition into Killer Frost in The Flash's third season, fighting against the people she once called friends. By the end, however, she was somewhat more conflicted, and ultimately decided to leave town to find her own purpose.
Whatever that was, it looks like she's found it. Caitlin Snow returns to STAR Labs in the trailer, arriving just in time to save the day, with the line: "Expecting someone else?"
She's no longer looking like Killer Frost, with her hair very much back to Caitlin's own colour, so it does appear the character is back on Team Flash in some capacity, though there's still plenty to learn in terms of what she's been through.
The trailer also teased the return of Barry Allen, last seen entering the Speed Force with his mother. Cisco, channeling his inner Han Solo, has a device he thinks will bring Barry back. I wonder if we'll get a return similar to Buffy, with Barry actually being ripped out of heaven when his friends think they're saving him.