At an inquest depicted in the drama, there is a reference to a Dr. Malcolm Atterbury having signed a death certificate. No doubt this was an in-joke as there was an actor named Malcolm Atterbury who had appeared in an earlier first-season Hitchcock program and was filming North by Northwest (1959) at the time this one was made.
This episode was remade in 1985 for the 1980s Alfred Hitchcock Presents (1985) as Wake Me When I'm Dead (1985) with Barbara Hershey and Buck Henry.