Ron's Return
In much of the final book, Harry, Ron, and Hermoine are on the run, discouraged, and angry with one another. A particularly nasty spat leads to the severing of their small company, with Ron leaving in anger. The following months are, perhaps, the darkest time for Harry in the entirety of the series. But just as all seems lost, when Harry is about to die beneath the surface of a frozen pond, Ron appears, thrusts his hand into the water, and pulls his friend to safety.