![image](https://comicvine.gamespot.com/a/uploads/square_tiny/0/77/263048-85557-book.jpg)
Book
A post-cognitive mutant who joined the Genoshan Excalibur.
Name:
Book
Publisher:
Real name:
Annika
Aliases:
- Annika
Birth date:
None
Gender:
Female
Powers:
- Postcognition
First issue:
![cover](https://comicvine.gamespot.com/a/uploads/original/0/77/263048-85557-book.jpg)
The enigmatic Book was a mutant with the ability to see into the past. She joined Professor X's New Excalibur that he formed after the Genoshan Sentinel Attack caused by Cassandra Nova. She is quite a bit older than most new recruits but is conversely much more skilled in the use of her powers.
She is presumed to have lost her powers after the events of M-Day, though this is unconfirmed.