Kay Kelly has always envied pretty, privileged Violet-May Duff, but the two young girls come from very different worlds. Suddenly befriended by Violet-May, Kay finds herself welcomed into the grand Duff house, where, charmed by Violet-May's sister, the ethereal Rosemary-June, and intrigued by Mrs Duff, a woman with a past, she falls helplessly in love with Violet-May's brother Robbie. It all seems too good to be true. And it is. One mild September afternoon the three young girls take Violet-May's baby brother for a walk in his pram. What happens on Bone Bridge that day will change all their lives forever.