First Appearance: Naked in Death
Richard Troy is Eve's biological father; from when she was about five or six, he began raping her, continuing until the night of his death when Eve was eight years old. Eve kills him with a kitchen knife while he is drunkenly raping her, in Dallas, Texas, but he breaks her arm during the process. He is present in every single book, as he is always the spectre of Eve's nightmares. Typically, he appears in her nightmares to tell her that no matter how many people she finds justice for, there will always be more monsters like him, waiting to do more evil to innocents like the little girl she was.
His first name is revealed in Judgment in Death; his last name is found by Roarke in his file on Homeland Security Organization's files in Divided in Death . He was working as a kind of informer for HSO, despite the fact that he was a criminal with a minor child, Eve (at eight years old). Richard Troy was raising Eve - who is definitely his biological child - with the intent of using her for child prostitution.
Mira concludes and tells Eve in Reunion in Death that Troy was probably not a pedophile himself, but preferred adult women, something that Eve does vaguely remember. In Interlude in Death, Roarke realizes that his father, Patrick Roarke had business in Dallas, Texas, with Troy, the same week of Troy's death. This business is fully realized in Divided in Death; Eve remembers her father telling her in Reunion that she was finally going to start working (or rather, being raped for her father's profit). That Patrick Roarke was there, with cash, on his own business, indicates that Troy was going to sell Eve to Patrick Roarke. For the record, HSO was perfectly aware that Eve murdered Troy, but cleaned up the body and had the case unsolved, as they had themselves recommended she not be taken out of Troy's custody.
Troy also had business dealings with Max Ricker, the villain of Judgement in Death, and stole money from him. Ricker knew he had a daughter, but over twenty years later, does not make the connection between Troy and Eve. Troy was under surveillance by the HSO the day he died. He was recorded as having returned to his hotel room at 2:00 a.m. in the morning; in Eve's memories, he begins beating and raping her immediately after his return, during which she kills him. Therefore his time and date of death is shortly after 2:00 a.m., May 13, 2036.