Pick up a quart of wallpaper Border Adhesive and a small roll of paper joint tape and glue the tape to the ceiling, then apply three thin layers of joint compound over it. If it comes back again, there may be nothing you can do for it.
Every house "Breathes", meaning that the wood frame absorbs and releases moisture as the weather conditions change. This means that the house has to expand and contract with the changing of the seasons and the weather. There will always be an area of each house that will have a crack. I see this in ranch styles all the time, almost always in the hall.