Melissa Abell's twin sister died, leaving behind the baby Melissa was carrying for her. Not wanting to deal with her brother-in-law's family, Melissa leaves town. Finally tracking her down, Brett Costain makes a plea, as the baby's uncle, to help. At first he means financially, but as Melissa's love draws him closer, Brett longs for more. Like an instant Polaroid, Kate Welsh's SUBSTITUTE DADDY (3) comes in fuzzy at first, but slowly the story grows clear and a clean, crisp romance emerges.