Halo Alpha: Dr. Halsey`s personal journal by Dr Catherine Halsey

Hardcover folder with inserts

"A glimpse into the mind of a narcissistic sociopath. Like Mein Kampf with pictures." - 4th Generation Smart A.I Black Box (Serial Nr: BBX 8995-1)

Dr. Halsey's personal journal is a booklet co-written by Eric Nylund and is included with the Halo: Reach Limited and Legendary editions.[1] It covers various elements from the Halo universe and is written through the eyes of Catherine Halsey herself.

In the journal, several important revelations are made regarding Cortana and Halsey's relationship with Captain Jacob Keyes and Miranda Keyes. Halsey states in an indirect fashion that she and Captain Keyes had a relationship and that though Halsey had been close to Miranda, they had drifted apart.

Furthermore, it is stated that when Miranda received command of her first ship, UNSC In Amber Clad, she had invited Halsey to attend the ceremony but Halsey refused, stating, "I didn't go. Because her father would be there? Because I am neck deep in the final stages of a half-dozen projects? I know why I didn't go. I don't want to say it." From this it is inferred that Halsey is the mother of Miranda Keyes. Another clue to this theory is that Halsey wrote in the journal that Miranda had her surname changed to "Keyes," which she believed was done to try and impress her father. It is also mentioned by Halsey that Cortana's appearance somewhat resembled Miranda. Since Cortana was derived from Dr. Halsey's own brain, this remark would not have made much sense had Miranda not been biologically related to her. Finally, on July 12, 2531 on the side of the page, Dr. Halsey wrote, "Jacob has agreed to take her in. I'll miss her, but it's for the best."