"The Letting Go" is the seventeenth episode of the fifth season of Private Practice and the 93rd produced episode of the series. It is also the 258th produced episode of the Grey's Anatomy franchise. It was broadcast on March 15, 2012.
When Erica begins experiencing abdominal pains, the doctors soon deduce that her cancer spread and she must face the prospect of saying goodbye to Mason for good while Cooper and Charlotte try to help them through the traumatic experience. Jake visits his stepdaughter who makes him question his feelings for Addison while, when Scott arrives in the E.R after being beaten by a patient, Violet faces her feelings when she learns that Pete is his doctor. Amelia struggles to accept the reality of her condition while Sam accepts the true hardships of dealing with Corinne's condition and tries to find the best way to help her.
- "Infinity Street" - Richard Walters
- "Everytime You Go" - Release The Sunbird
- "Eyes" - Imperial Mammoth