their son a certain type of treatment. they ended up in jail. >> and their struggle may have been worth it. they say their son is now cancer free. listen. >> reporter: the cancer treatment became the subject of much scrutiny. the center of a tug-of-war between doctors and the family. eventually ending in an international man hunt for his parents. they were arrested in spain after leaving a hospital in britain against doctors' orders after aisha had his brain tumor removered. his parents wanted to follow up with proton therapy instead of radio therapy. proton therapy targets cancer therapy. leaving the hospital led to the man hunt. >> this is my son. we were most disturbed today to