Reluctant author Anthony Horowitz tells ex-detective Daniel Hawthorne that after three books, he’s splitting and their deal is over. Anthony’s new play, a thriller called "Mindgame," is about to open at the Vaudeville Theater in London’s West End. Not surprisingly, Hawthorne declines a ticket to the opening night. The play is panned by the critics. In particular, Sunday Times critic Margaret Throsby gives it a savage review, focusing particularly on the writing. The next day, Throsby is stabbed in the heart with an ornamental dagger, which turns out to belong to Anthony and has his fingerprints all over it. Anthony is arrested by an old enemy, Detective Inspector Cara Grunshaw, who is out for revenge. When a second theater critic is found to have died under mysterious circumstances, the net closes in.