When perfect stay-at-home mother Jess takes her baby daughter to the hospital with a head injury that she can't explain, her close friend and on-duty ER doctor Liz must make the excruciating decision of whether to call social services. With one phone call, Liz sets in motion a chain of events that ripples, fractures and nearly destroys not only their families but their entire friendship group.

Adapted from the bestselling novel by Sarah Vaughan.