David and Louise Turpin are facing a string of charges, including torture, after police say the couple kept their 13 children locked away in subhuman conditions in their Perris, California, home. On Thursday, the Turpins made their first court appearance. >> Watch the video here >> On Rare.us: Here’s what the children in the California torture house did to cope with the alleged abuse David Turpin appeared in chains, wearing a lavender shirt and black jacket while his wife sat nearby, also in chains and a black jacket. The Turpins entered not guilty pleas to all of the charges, some of which date back to 2010. The district attorney says the couple is facing 94 years to life in prison if convicted on all counts. >> Dogs found in perfect condition in home where 13 siblings held captive During the arraignment, the Turpins were quiet and spoke only to say they acknowledged their right to a speedy preliminary hearing, CBS reports. They will appear in court again on Feb. 23, and their bail was set at $13 million. District Attorney Mike Hestrin said in a press conference, “As a prosecutor, there are cases that stick with you, that will haunt you. Sometimes, in this business, we’re faced with looking at human depravity, and that’s what we’re looking at here.” Authorities said the parents were able to keep their children hidden away by listing their home as a private school. Some of the kids, who ranged in ages from 2 to 29, reportedly didn’t know what a police officer was. The children were only allowed to eat once a day and shower twice a year, authorities said. However, the parents reportedly did allow them to keep journals, and authorities said the kids filled hundreds of notebooks. Those have not been released and are still being reviewed by law enforcement. The children are currently being cared for in the hospital, authorities said. The Riverside University Health System has set up a fund for the children that will go to their long-term needs, according to a press release. The hospital said the children have already seen a tremendous outpouring of support. >> Read more trending news Brian Rokos of the Press-Enterprise was present at the hearing and reported that David Turpin is being represented by a public defender, while Louise Turpin has outside counsel. During Thursday’s arraignment, the public defender requested that media be banned from the trial, but the judge shot that down. Rokos said reporters from around the world were in the courtroom. The Turpins' lawyers have not announced whether they will try to have the case moved out of Riverside County.