Peter Mason

Peter Mason was a co-founder and doctor at Delphi House. He also was the husband of Alodie Carter and father of the protagonist of the series, Erica Mason. He was the first person to die to the hands of Mia Greene.

Background
Peter was a doctor at the Delphi House, he co-owned the place with Lucien Flowers. Here he met a nurse named Alodie Carter that later became his wife. He was very knowledgeable of Greek culture, since the Delphic Epsilon symbol is from Greek origin and so is the word 'Delphi', a goddess and an ancient religious sanctuary dedicated to the Greek god Apollo.

Peter recalls nights of him and Alodie talking to each other. She would talk about the future, whilst he would talk about the past. He eventually assumed that Alodie's ancestors were priestess that carried the gift of foresight.

Death
Mia finds out about the plans Peter had for Erica in the future, so she murders him before he could do something. She performed an injury in his chest resembling the Delphic Epsilon symbol.

Present day
Peter's death was a pretty traumatic experience to Erica. Whom still has nightmares about the night of him laying dead by the couch.

As the story progresses, Erica and the player find out that Peter was not as kind and caring as he portrayed to be. Mia tells Erica about everything Peter has done to Alodie, his patients, Erica and even herself.

Delphi House
He still is remembered at Delphi House as an inspiring person, very smart and ahead his time. Dr. Ballard and Flowers recall him very dearly.

No other patients seem to have met Peter. However, both Tobi and Hannah seem to know a bit about him, probably from  Dr. Ballard and Flowers.

Peter also was the one who invented a therapy based on pictures, used by the facility to recall past memories from their patients. However, there is a twist in the therapy, it its believe that the therapy was being tested to control people.

Notes/Trivia

 * It is speculated that he might not have loved either Alodie or Erica, since he was willing to sacrifice them in order to achieve his goals.
 * It is hinted Lucien and Peter were the heads of the Delphi House project.