Part 1: Spankings help a naughty girl be good.

The words had chilled Cole when he'd heard the young Abigail utter them, her teeth chattering as she recovered from exposure to below-freezing temperatures. With her mangled bicycle in the back of his truck, Cole had taken on more than he had ever dreamed when he'd stopped to help the lost and lonely 19-year-old. Her teddy bear peeking out from her backpack paired with the thickly padded diaper she wore beneath her short skirt told him everything he needed to know to make his heart long to make her his.

Raised by her stepbrother, Abigail had an upbringing she'd never managed to grow out of. Even though she was now in college, her inside self was still a baby girl. It filled her with shame. Her stepbrother's abuse filled her with shame, too - the harsh words, the spankings and humiliation. She loved him, and she owed him everything. She owed him her life.

Part 2: Paul's got a dirty little secret.

Waking up to his special girl's stepbrother, Paul, trying to kill him wasn't the way Cole thought he'd be starting his Sunday morning. Having that stepbrother on his knees, doing things to Cole he'd never experienced before, is not the way Cole thought he'd be finishing Sunday night, but he did.

In between those moments, Cole takes care of his sweet little Abigail in all the special ways he knows how. He makes sure her tummy is full of good, wholesome food; helps with bathtime; and gives his sweet little Abigail a red-bottomed, tearful correction when she throws a very naughty tantrum. On top of all that, he helps Abigail learn about her own body and the pleasures he can give her.

Part 3: Someone's gonna have a "first time", but it's not Abigail.

With the things that Paul has been doing to him, Cole is suffering a crisis of identity. He hates Paul for making him want him - but he still wants him. And by the end of part 3, Cole's going to have him.

Part 4: Abigail loses her innocence to two men in two different ways.

Taking Cole for the first time is hard on the innocent Abigail. It's hard on Paul watching her take him. Cole wasn't built for a girl's first time. He's too big, and Abigail's just a little with a cute, thick padded diaper.

But Abigail found out a secret. She found out that her Cole likes someone else. She found out that he likes Paul - in a very special way, a way that includes arched necks and clenched hands.

While Abigail's not ready to share, neither is Cole. He's not ready to share anybody - not Abigail and not Paul.

In Abigail 4, the happy conclusion of the Abigail series, the three would-be lovers battle with their wills and their hearts, each doing their best not to be left behind by the others.