Simple Explanation (S05E20)

Charlotte, an older woman who has spent the last six months taking care of her husband Eddie, is rushed to Princeton Plainsboro for immediate treatment after collapsing from respiratory failure at Eddie's deathbed. With both in the hospital, the husband and wife team become a double mystery when Eddie's condition sporadically improves while Charlotte's condition is deteriorating. The urgency of Charlotte's medical condition breathes new life into their romantic relationship, and their regrets of what could have been are replaced with tenderness as Charlotte informs the team she wants Eddie to have her heart should she die before him. The team is forced to make a difficult choice as both of their lives are nearing an end. (iTunes)