Title: Invest in Love
Air Date: November 5, 2009 at 12:00 AM PST
Arizona is stunned when the parents of her 10-year-old patient offer a generous donation to Seattle Grace — but when the boy's condition worsens, all eyes are on her to save him. Cristina tests her relationship with Owen when she blatantly disregards his orders and performs an unauthorised cardiac procedure, then later kisses Mercy Wester Jackson Avery at a surprise party for Arizona. Alex cares for a struggling newborn — and deals with Izzie's hospital bills — while his wife remains missing. In the wake of great grief, Arizona and Callie take their relationship to the next level.