Cassie soon realizes her new Grey House guest has some lessons to learn. Sam discovers the benefits of a therapy dog when helping a patient. An unexpected visit from her Stephanie's ex-husband stirs up jealousy in Adam. Abigail helps Donovan write a speech and struggles to remember their song. George reunites with an old army friend and makes him an extraordinary and lifesaving offer. Meanwhile, a gift from Cassie brings new meaning to a serendipitous reunion between two of Sam's patients.
