UPDATED 11/18/22
TMDb strikes again!
TERROR IN THE NIGHT (3/9/76 MYST original, LOST, last aired 5/18/77-ABC) has been removed in favor of its duplicate "TV episode" page. 🤦‍♂️
Off to pointlessly fight about this yet again. I've really grown to hate that site.

Click "READ NOTES" for broadcast dates, survival status and other info

ABOUT:
This is the first complete list ever compiled of the films that were broadcast on ABC's Wide World of Mystery. Many of the U.S. installments are lost and long forgotten. So much so that many confuse WWOM as nothing more than the U.S. broadcast title for the U.K. series Thriller. Episode guides typically included less than half the films listed here!

🤗 Special thanks to :
clemensthrills for production info and news clippings
Christ Tufts for director and producer credits
Cary at LOC for tracking down several of the "lost" installments.

SERIES HISTORY:
'Wide World Mystery' was a late-night film presentation series spun off of Wide World of Entertainment in January 1974 (though sources erroneously cite the 1973 premiere of WWOE as its debut). Despite an erratic schedule (initially Monday, Tuesday and every other Friday, though this would change in time) the show was a success thanks to a heavy emphasis on original productions and premieres (including the U.S. debuts of installments from the U.K. series Thriller) as well as it extending the broadcast day to 1am (a big deal at the time as most stations went off the air at midnight).

In January 1976 the series was scaled back to one night a week and rechristened Mystery of the Week. At this point however, the show's broadcasts consisted almost entirely of reruns. A mere five episodes featured movies that had not already been shown on WWOM. Only two were original productions while the other three were repeat airings of films first shown as part of other ABC series. Viewership declined as a result and the final episode aired on August 16, 1978.

AVAILABILITY:

All films produced for Thriller are available in U.S. and U.K. DVD box sets. I've included links for all films that I've found viewable online. Others are noted with release info or one of the following....

ARCHIVE:
These films are only known to survive in a film archive. Copies are still badly needed as archive holdings are only viewable locally (if at all) and in some cases may never be utilized.

UNAVAILABLE:
These films are extant (typically with the production company or copyright holder) but are not available in any form, legal or otherwise.

LOST!:
No prints of these films are currently known to exist. Home recordings were likely re-used, lost or discarded years ago, but surviving copies are still a possibility. Any tapes, regardless of quality, need to be preserved ASAP!

Original broadcast dates are noted for each film. The show's broadcast history is quite a tangled web and TV listings frequently disagree with each other so this list is subject to changes as I get new info.

Bonus info added: All lost or unavailable/archived films now include the date, location and station of its last known broadcast. Who knows? Some of the prints used may still be traceable.

Since this is about films, episodic TV shows featured on the program (i.e. "Mannix", "Longstreet", etc.) are not included though I did give feature-length pilots a pass as they are basically made-for-TV movies.

WHY ARE SO MANY LOST?
WIDE WORLD OF MYSTERY (along with the nighttime soap opera THE EDGE OF NIGHT, and many newscasts, sports programs, and game shows) fell victim to a mass inventory purge at ABC in 1978 which resulted in the network wiping a large number of broadcast tapes in order to reuse them.

What is unclear is whether or not any of these were the master tapes. While, for the most part, ABC did not produce these films, they did commission them. They were not pick-ups. In many cases the masters were held by the production companies. Hopefully this will turn out to be true of all of them. However, it is concerning that these have been MIA for over 40 years now. If viable prints do exist with the producers, it begs the question of why they've sat dormant through the entire rise and fall of cable TV, satellite, pay TV, VHS, DVD and now online streaming.

Compiling this list was quite a bit more daunting than I originally anticipated, mostly due to its ever-changing schedule which resulted in mistakes galore in the TV listings. For more on this see my thread on Classic Horror Film Board:

Making a complete Wide World of Mystery episode guide .