that same year, the family and the country face a crisis when the princess's father, a heavy smoker, has surgery after doctors report, quote, structural strangers changes in the law. >> he had a lung removed, and there was hope that he would make a full recovery. >> the king was suffering from cancer that they never talked about in those days. >> it was in denial, really, about how ill he was. he wanted to keep it from his family as much as possible. >> he never wanted to be talking, so i think for george, really, the stress of having to take on that mental burden, and the sovereignty, plus the cancer, made him a very sickly man. >> four months after the surgery, king george sees elizabeth and philippe off as the couple embarks on a six month commonwealth tour, the first stop is kenya. >> she was in the bush hotel, if you like, whole tree tops.