Back in June, I had the true honor of interviewing Stephen Sondheim on stage at a writers’ conference event at Rutgers University, and asked him about a lot of things, including his early scriptwriting stint on the TV sitcom Topper. But I didn’t have the time, in 90 minutes, to cover every aspect of his long and amazing career – including this 1973 murder-mystery movie, which he co-wrote with Psycho star Anthony Perkins. Stars include Richard Benjamin, Dyan Cannon, Raquel Welch, James Coburn, Ian McShane and James Mason, and the mystery is just as much of an intricate web as you’d expect from Sondheim, whose passion for puzzles is well known.