WARNING: THERE WILL BE SPOILERS IN THIS BOOK, SO IF YOU HAVE NOT FINISHED ALL OF THE SUPERGIRL TV SHOW UP UNTIL THE END OF SEASON 3 DO NOT READ THIS BOOK! IF YOU DON'T CARE ABOUT SPOILERS, PLEASE READ AHEAD!
Krysten Zor-El, better known as Krysten Sawyer-Danvers, is Kara Danvers' younger sister and Alex Danvers and Maggie Sawyer's adopted daughter.
Kara and Krysten were stuck in the Phantom Zone together, but only Kara managed to escape, leaving Krysten behind.
When Krysten, finally, landed on Earth, just a month before Kara revealed herself as Supergirl, she confused everyone... Somehow, she wasn't a child anymore, she was an 18-year-old girl.
Season 4 of The Virus Within
Trinity is familiar with zombies, being one herself, but when strange zombies start appearing, she realizes that the world she knew might be changing yet again.
When a dangerous set of scientific notes are discovered, Trinity and her friends don't realize anything is wrong until a frantic radio call comes in. Unaware of the notes, they race to the south and struggle to determine where the strange zombies came from. The zombies are unlike any ranks previously seen, and they aren't as predictable. Some have new tricks hidden up sleeves, forcing any Stronghold they encounter to quickly adapt to the new challenge or risk being overrun. Secrets never remain hidden, and zombie apocalypses never make life easy.