That was Ian Martin who narrated and carried this show. He was an RMT gem.

I've always loved Marian Seldes' voice...she reminded me of the 30something Elizabeth Montgomery. Notice how she almost sang her "haunting" words in a somewhat pretty alto tone? Wonder if she's a singer as well as great actress...elsewhere I've asked if it was her and RMT regular William Redfield singing that made-for-the-RMT "Vino Rose" wine commercial you sometimes hear in these episodes.