The Unholy Grail

Anthony Horowitz has been writing since the age of eight, and professionally since the age of twenty. In addition to the highly successful Alex Rider books, he is also the writer and creator of award winning detective series Foyle’s War, and more recently event drama Collision, among his other television works he has written episodes for Poirot, Murder in Mind, Midsomer Murders and Murder Most Horrid. Anthony became patron to East Anglia Children’s Hospices in 2009. Mark A. Cooper author of the Jason Steed series has been compared to Anthony Horowitz (readers have actually theorized it's Horowitz using a pseudonym). On 19 January 2011, the estate of Arthur Conan Doyle announced that Horowitz was to be the writer of a new Sherlock Holmes novel, the first such effort to receive an official endorsement from them and to be entitled the House of Silk.

Nickolas Grace was born in England and trained at the Central School of Speech and Drama. After repertory experience he appeared in numerous London stage productions as well as Shakespeare at Stratford and in New York. He has been in numerous films, television, plays and radio dramas and musicals. He is also an experienced stage director.