Knight, 32, the first of the three women to be kidnapped, was in a store asking for directions when she was approached by Castro who offered to give her a ride, said Detective Andy Harasimchuk.
Knight told detectives she accepted the ride because she knew Castro's daughter. Castro then drove her to his house and invited her to come inside to pick out a puppy for her son, at which point Harasimchuk said Knight was restrained with an extension cord, dragged to the basement where she was restrained with chains, had a motorcycle helmet jammed on her head and raped for the first of many times.
Eight months later, on April 21, 2003, Castro targeted Amanda Berry by offering her a ride home from her job at Burger King. Berry knew Castro's son and daughter, and Castro took her to his house so she could talk to his daughter, Harasimchuk said.
She was quickly bound with duct tape, put in a motorcycle helmet and chained to a pole in the basement.
Castro's third victim, Gina DeJesus, now 23, was friends with his daughter. She got into Castro's car and he asked her to come in the house to help him carry a speaker to his car, Harasimchuk said. She became uncomfortable and tried to flee in the dark house, she inadvertently ran into a closet and captured, the detective said.
The home was wired with alarm clocks "in a makeshift manner" to create an alarm system to the house, he said.
The women were kept in two rooms behind a door that could be secured from the outside with a lock, with a circular hole cut towards the bottom of the door that was a source of ventilation, the agent said. The windows were boarded up with very heavy closet doors, he said.
Berry shared one room with her now 6-year-old daughter, who Castro fathered while in captivity. DeJesus and Knight shared an attached, smaller room where a chain was also kept to restrain the women.
According to a sentencing memorandum released Wednesday, the women were restrained by chains attached to their ankles with access only to plastic toilets in the bedrooms that were rarely emptied. Castro fed the women one meal a day and used the "cold of the basement" and the "heat of the attic" as punishment techniques, according to the memo.
The women kept diaries during their incarceration.
"The entries speak of forced sexual conduct, of being locked in a dark room, of anticipating the next session of abuse, of the dreams of someday escaping and being reunited with family, of being chained to a wall, of being held like a prisoner of war," the memorandum says.
Castro pleaded guilty to 937 counts, including kidnapping, rape, assault and aggravated murder that will send him to prison for life with no chance of parole for abducting the three women and keeping them as sex slaves for more than a decade in his Cleveland home.
The prosecution released the memo in an attempt to persuade the judge to give Castro the sentence that the former bus driver has agreed to accept.
The plea deal spared Castro the death penalty because he was accused of the aggravated murder of a fetus after forcibly causing an abortion in one of his victims that he is accused of impregnating. The deal will also spare the three women from having to testify at a trial.