As the Ellinghams prepare to leave, Ruth admits to Martin that she’s been writing a paper on his phobia and she thinks he’s been misdiagnosed. Ruth is also counseling Mrs. Tishell on overcoming her obsession with the Doc, while Penhale arranges their goodbye party. Chicken the dog escapes and Martin has a life-threatening accident trying to catch him. Guest starring Rupert Graves (Sherlock).