Mr. Mason

"Alex, I gave you 5 days. You failed. You should have stayed in Vorkuta."

- Dot to Alex.

Dot Mason is the father of Alex Mason and Marion Mason. He sent three letters to Alex's CIA account under the name Dad-Letter1.txt, Dad-Letter2.txt and Dad-Letter3.txt.

Biography
Dot Mason fought in WWII at Makin Atoll for the United States Marine Raiders. He received a Purple Heart for his time there. After a few years of his son's departure to the military, his wife fell ill and her doctor was unable to cure her. Accepting the inevitable, he contacted his two children to see their mother for the last time. He saw Marion arrive along with her sisters, but failed to find Alex. He sent eight more letters to Alex, asking for his excuse, and still did not receive a reply. He sent one last letter, stating that the funeral service would be in five days. After this last letter, Alex failed to make up during his grace period and left Dot in great anger with his son.

Trivia

 * Aside from Marion, Dot has other unnamed daughters.
 * In Dot's final message to Alex, he calls him "Alex", unlike his previous letters where he called him "son". This is likely to show Alex that Dot no longer considers him family.