Bitty Schram's exit from Monk after season 3 meant that one of the most important Sharona storylines happened offscreen. Sharona was a huge part of Monk's first three seasons, serving as the Watson to Adrian Monk's Sherlock. Schram's character was more than just Adrian's assistance or nurse – she was his best friend and the person Monk could always count on. This is why Sharona's departure from Monk could have ruined the series if not handled correctly.