Book excerpt: Following the clues of her great-grandmother's diary, Sarah Martin went to Moose Creek, Wyoming. In the town church, she's strangely drawn to a stained glass window. She turns away -- and finds herself over a hundred years in the past! It's 1870, and suddenly Sarah must adjust to frontier life and meet her great-grandparents. Then handsome Joshua Campbell arrives -- and Sarah falls in love. But she can't interfere with the workings of the past -- can she?