The years passed. Cameron and the other ducklings moved on from PPTH. Wilson and Cameron kept in touch, and she even corresponded with House now and again. Mostly Cameron wanted to make sure they were okay together, but also she wanted to make sure Wilson remembered her promise.
Wilson remained the Head of Oncology for many years. Thanks to rapid advances in plastic surgery, he was able to remain at PPTH much longer than he'd remained at any other hospital. Eventually, though, people began to question just how good he looked, even with all the nips and tucks he'd admitted to, and he decided it was time to end things.
House was devastated when Wilson had to leave PPTH. He could have gone too, he supposed, but he was too much a creature of habit. Picking up anchor and moving somewhere new, even with Wilson, was too much for him. He was an older man now, in his early sixties, and the prospect was just too daunting.
Wilson was very careful not to go too far. He was lucky to be able to set up a small practice in Connecticut. He spent many weekends with House, but it was never quite the same. A few more years passed, and House and Wilson settled into a new routine.
And then came the day that he knocked but House didn't answer the door. Wilson used his key, and found him on the sofa. He had died in his sleep. Wilson sat on the floor and cried. He cried for his friend. He cried because he had never been able give House what he wanted, a day without pain. He cried because he knew he wouldn't be able to even attend the funeral. Too many people would ask questions.
He picked up his phone and dialed Cameron. She cried too, when he told her. She agreed to come at once, and she did. He was afraid he would have to remind her of her promise, but he needn't have worried. It was all too clear when she arrived that she knew why he had really called her.
Days later, after Cameron had attended the funeral, she picked Wilson up. She drove him to the cemetery, so he could say his own goodbye to his friend. When he was through, she asked him if she was ready. He nodded.
They waited until nightfall, when they were sure they wouldn't bee seen. And then, as he stood over House's grave, Cameron kissed him, just as she had kissed her husband. She let her lips linger over his, her friend, as she drove the stake deep. And just as her husband had done, Wilson disintegrated into nothing more than dust and ash before her eyes. Granting his final wish, she dug a little hole and scraped his remains into it, burying him with the best friend he'd ever had.