The classic horror/suspense anthology series Boris Karloff’s The Veil is available as it’s own stand alone free Roku Channel. From the developers description:
Boris Karloff’s vintage anthology series The Veil. The series was hosted by Boris Karloff, who also acted in every episode but one, and was allegedly based upon real-life reports of supernatural happenings. 13 commercial free episodes including pilot!
A more in depth description of the series from Wikipedia:
The series was hosted by Boris Karloff, who also acted in every episode but one, and was allegedly based upon real-life reports of supernatural happenings and the unexplained. Ten of the twelve episodes began and ended with Karloff standing in front of a roaring fireplace and inviting viewers to find out what lies “behind the veil.”
Hailed by critics as “the greatest television series never seen” (according to DVD release publicity) The Veil was never broadcast. Troubles within the studio (and the collapse of a preliminary co-production arrangement with National Telefilm Associates) resulted in production being cancelled after only 10 episodes (an additional episode called “Jack the Ripper” had been produced by another studio and was acquired by the Roach Studios; Boris Karloff only introduces the episode). This was considered too few to justify sales to a network or to syndication. In the late 1960s, footage from several episodes was combined to make films that aired on late night television. Ten episodes were released to the public in their entirety for the first time in the 1990s and have subsequently been released on DVD by Something Weird Video. In 1999, “Lifting the Veil of Mystery,” a Tom Weaver article on the making of the series (complete with episode guide), appeared in issue #29 of “Cult Movies” magazine.