an Episcopal bishop and is now semi-retired. Katherine Vigneras also appears very briefly in A Ring of Endless Light playing a recital that Vicky Austin and Zachary Gray attend. In A Severed Wasp, she has a portrait painted by Philippa Hunter, protagonist of And Both Were Young. Emmanuele Theotocopoulos (known as "Mr. Theo") — Organist and teacher. Introduced in The Young Unicorns, (1968, ), he is the semi-retired organist at the Cathedral of Saint John the Divine in New York City, and the piano teacher and mentor to the blind piano prodigy Emily Gregory. Mr. Theo is excitable but warm-hearted, with true affection for and protectiveness of children and adolescents who come under his eye. In Dragons in the Waters, Mr. Theo befriends Simon Renier, and later summons Canon Tallis (whom Mr. Theo calls one of his oldest friends) to come and help when Simon's presumed "Cousin Forsyth" is murdered. Mr. Theo normally expresses himself with great formalism and precision, but he is prone to malapropisms such as "It is time that we leveled upon each other" and "You're barking up the right hydrant." Canon Tallis says in The Young Unicorns that he met Mr. Theo in Paris; perhaps English is not his first language. Mr. Theo is described as a "small, old man" and he lives on Riverside Drive in a "large and dilapidated, but still elegant mansion." Emily Gregory — Pianist. Emily is the daughter of a renowned scholar of Ancient Greece. Her mother is evidently deceased. Her father once rented an apartment in their house to two scientists visiting New York to work on the Micro-Ray. An intruder broke into the house to steal papers related to the design of the Micro-Ray, only to find Emily, aged ten. The intruder used an uncontrolled Micro-Ray to "temporarily" blind Emily so that she could not see his face, but the Micro-Ray destroyed her optic nerve and blinded her permanently, instead. In The Young Unicorns Emily, now twelve, has resumed her study of the piano with Mr. Theo and is regarded as a prodigy. She has received high-quality training in braille and mobility for the blind at the instigation of Dr. Hyde, the head of the Micro-Ray project. She attends the St. Andrews School, where the Austin children go while they live in New York City. The Austins rent the apartment in Emily's home where the two scientists—Dr. Austin's predecessors