Mr. Crabtree is an elder man who has just been let go from his previous job due to his age. With his wife Mrs. Crabtree in poor health. He receives a call from an employer to whom he had written, and the employer sends his secretary to discuss the job with Crabtree. He gets the job and soon is making good money and living the good life. However one day he is paid a visit by his boss the mysterious Mr. X who wants Crabtree to do a new job for him for a whole years salary. That job murder a man. There's not to much to say about this one it's a fine little story that isn't to hard to understand even if a bit on the predictable side. It still doesn't ruin it though as John Qualan making his third and final appearance in the series is really enjoyable to watch, he plays the whole innocent guy role really good. A surprise appearance from Lorne Greene pre-Bonanza was a fun surprise as well. Like said the ending is a bit predictable, and oddly played off in a silly sorta way despite the situation that's just occurred.