Theatre Trivia Tweet: British Brothers The writer of this murder mystery and his brother? One wrote Sleuth and the other wrote Amadeus. Who are these playwriting brothers? SelectReveal Answer> They are Anthony Schaffer (Sleuth) and Peter Schaffer (Amadues). They are identical twins. Peter, who was predecessors by Anthony in 2001, is 88 years old. (Amadeus). Post navigation previous postNext Post