I never paid much attention to the wealth of free e-texts out there until I started using the "Notes" feature on my iPod in conjunction with the iPod Library program. Whatever your e-reader of choice , there are some great free books - pre 1923 volumes available on sites such as Project Gutenberg.
Here are some recent ones I've enjoyed:
1. The Green Mummy by Fergus Hume - The mummy of the title has South American origins. It's stolen after being purchased by a British researcher and the man he hired to deliver it is murdered. Much of the plot revolves around family and romantic relationships and the like, but I still found it engaging and fascinating.
2. The Beetle by Richard Marsh - Three interconnected stories chronicle this tale of a hellish creature seeking vengance for the desecration of a tomb in Egypt. It's a great horror-gothic.
3. Three John Silence Stories and Three More John Silence Stories by Algernon Blackwood - Six great horror mystery stories featuring one of the early psychic detectives. It's a Victorian X-Files. Silence battles fire demons, survives haunted houses and investigates strange towns with mysterious histories - all great reads.
4. Dr. Who by various authors - Tales of many different Doctors from the BBC. Some are in more readily downloadable formats than others, but with a little patience there are great selections.
5. Can Such Things Be by Ambrose Bierce - A collection of great stories including "The Damned Thing."