When the X-Men are called to the scene of a murder, they discover the mutant victim was artificially produced, and are led to the mysterious Ghost Box, which holds the secrets to the artificial mutants.
- Paperback: 184 pages
- Publisher: Marvel (December 9, 2009)
- Language: English
- ISBN-10: 0785127887
- ISBN-13: 978-0785127888
- Product Dimensions: 6.8 x 0.4 x 10.2 inches
- Shipping Weight: 9.6 ounces