80% of the parental kidnappings are solved within a year; 90% within two years2
In the United States there are over 1,000 parental kidnapping cases involving U.S. children open that involve the child being taken out of the country. The United States and 80 other countries have ratified the Hague Convention on International Child Abduction which the ratifying countries agree to honor custody agreements outside of their borders unless the child is in danger.3 This means there are many countries a kidnapper parent can take their child to without fear of the child being recovered by legal means.
If Kyron Horman was kidnapped, then it was by Kaine Horman because he had the money, the people, and the time to plan the kidnapping before he divorced Terri. It is clear that Kaine Horman did not plan to stay married to Terri (see: Did Kaine Horman always plan on divorcing Terri? ) and since they were together eight years and the average American marriage lasts seven years4 , there is enough to reason to believe that Kyron's kidnapping and blaming Terri was thought out and planned by Kaine.
When Desiree Young (Kaine's former wife, mother of Kyron Horman) was eight months pregnant, Kaine starting having an affair with Terri Moulton. A month after Desiree served Kaine with divorce papers, she filed a restraining order against Kaine fearing he would kidnap Kyron as well as her son from a previous marriage.5
What hasn’t been made public is the fact that, a month after filing for divorce, Young sought a restraining order against Kaine Horman, Kyron’s dad.Apparently something happened a month after serving Kaine with divorce papers that caused Desiree to fear that Kaine would not only take Kyron but her son from a former marriage as well. Kaine learned from this. He planned out a parental kidnapping so he could blame Terri for it and get custody not only of Kyron but full custody of Kiara as well. It is also payback to Desiree for what she had done to him in the past - as well as to prevent Desiree from having custody or any contact with Kyron. Malignant narcissists will NEVER let anyone get away with doing anything against them without punishing that person even if it takes years to do so.
At the time, she had a 7-year-old son from a previous marriage. In court documents, Young said she feared Kaine Horman would “remove our children from their residence.” It’s unclear whether the couple was living together at the time. Washington County Circuit Judge Donald Letourneau granted Young’s request, forbidding either her or Kaine Horman from taking the children without the other’s consent.5
Something may have gone wrong and Kaine may have killed Kyron although if that happened, I do not believe that was part of the original plan although I'm not sure.
If Terri had been the one to have planned a kidnapping, she would have planned it so she would have custody of her daughter Kiara, her birth daughter, and would have not just had Kyron, her step son, kidnapped.