What is the main conflict in The Deep End of the Ocean by Jacquelyn Mitchard?

The Deep End of the Ocean by Jacquelyn Mitchard has the honor of being the first book selected for Oprah’s Book Club. This best-selling novel looks at how Pat and Beth Cappadora handle the disappearance of their child Ben. Their other two children, Vincent and Kerry, are also impacted by the disappearance of their sibling. A few years after the kidnapping, Pat and Beth luckily cross paths with Ben, and they all begin the process of healing.