The Girl at Saltbush Flat
When Burton Alexander invited Christine to his cattle station in the outback, posing as his fiancee, it suited her to agree -- until she fell in love with him, and then learned that he was planning to marry another girl.

Just what was Burton playing at?

Mills & Boon

Christine was smarting under the impact of an unhappy love affair, and needed a complete change of scene, so when Burton Alexander invited her to stay on his cattle station in the outback she thought she might as well accept. True, Burton had asked her, for reasons best known to himself, to pose as his fiancée while she was there, but Christine hadn't any real objection, so she agreed to that as well.
But then she managed to fall in love with him, and learned that, far from hoping that the mock engagement would turn into a real one, she must accept that Burton was going to marry Jackie Lester, whether or not simply because he wanted Jackie's property, Saltbush Flat, didn't seem to matter.
But just what was Burton playing at?
