Newly filed court requests are adding another major layer to the Ohio “House of Horrors” investigation. Authorities previously said 16 children, ranging from 18 months to 18 years old, were removed from a Vinton County home after investigators reported extremely poor living conditions. Four adults from the same family were charged with 16 counts of felony child endangerment and have pleaded not guilty.

The latest development centers on the defendants’ mental competency. Attorneys for Gary Siders Jr. and Christina Siders have asked the court for competency evaluations, raising questions about whether they currently understand the legal proceedings and can adequately assist their attorneys in their defense.

The issue is not limited to one defendant. Elizabeth Siders’ attorney has also sought a mental-health evaluation, arguing that her condition could affect both her ability to stand trial and, if she is found competent, questions concerning her mental state at the time of the alleged conduct.

Meanwhile, investigators and prosecutors continue facing a much bigger question: How could such a large family remain largely unnoticed for years? Authorities have said the children allegedly spent significant periods in a very small room under severely unsanitary conditions, while neighbors reported they were unaware that children were living at the property. Investigators have also been examining the family’s history and whether previous warning signs reached child-services or other authorities.

The new court filings do not establish guilt or innocence. A competency evaluation is specifically about a defendant’s present ability to understand the proceedings and participate in a defense; it does not itself determine whether the underlying criminal allegations are true. The court still has to decide what evaluations, if any, will be ordered.

As the legal battle develops, the focus is now expanding beyond the shocking conditions inside the home to the mental state, history and legal responsibility of the adults involved. More court decisions and investigative findings could determine how this case moves toward a potential trial.

The biggest question now: Will the competency requests change the course of the case—or lead investigators to uncover even more details about what happened inside the Ohio home?